Drop everything.
Critical CVEs that are confirmed exploited or very likely to be. Newest first.
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CVE-2026-97229
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.2 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 that, under certain conditions, could have allowed an unauthenticated user to execute arbitrary code on the GitLab server via a specially crafted regular expression in a CI/CD configuration, due to insufficient regular expression validation.
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CVE-2025-49844
Redis is an open source, in-memory database that persists on disk. Versions 8.2.1 and below allow an authenticated user to use a specially crafted Lua script to manipulate the garbage collector, trigger a use-after-free and potentially lead to remote code execution. The problem exists in all versions of Redis with Lua scripting. This issue is fixed in version 8.2.2. To workaround this issue without patching the redis-server executable is to prevent users from executing Lua scripts. This can be done using ACL to restrict EVAL and EVALSHA commands.
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CVE-2024-38812
The vCenter Server contains a heap-overflow vulnerability in the implementation of the DCERPC protocol. A malicious actor with network access to vCenter Server may trigger this vulnerability by sending a specially crafted network packet potentially leading to remote code execution.
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CVE-2024-37079
vCenter Server contains a heap-overflow vulnerability in the implementation of the DCERPC protocol. A malicious actor with network access to vCenter Server may trigger this vulnerability by sending a specially crafted network packet potentially leading to remote code execution.
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CVE-2023-34048
vCenter Server contains an out-of-bounds write vulnerability in the implementation of the DCERPC protocol. A malicious actor with network access to vCenter Server may trigger an out-of-bounds write potentially leading to remote code execution.
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CVE-2022-28381
Mediaserver.exe in ALLMediaServer 1.6 has a stack-based buffer overflow that allows remote attackers to execute arbitrary code via a long string to TCP port 888, a related issue to CVE-2017-17932.
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CVE-2022-22721
If LimitXMLRequestBody is set to allow request bodies larger than 350MB (defaults to 1M) on 32 bit systems an integer overflow happens which later causes out of bounds writes. This issue affects Apache HTTP Server 2.4.52 and earlier.
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CVE-2021-35211
Microsoft discovered a remote code execution (RCE) vulnerability in the SolarWinds Serv-U product utilizing a Remote Memory Escape Vulnerability. If exploited, a threat actor may be able to gain privileged access to the machine hosting Serv-U Only. SolarWinds Serv-U Managed File Transfer and Serv-U Secure FTP for Windows before 15.2.3 HF2 are affected by this vulnerability.
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CVE-2021-26691
In Apache HTTP Server versions 2.4.0 to 2.4.46 a specially crafted SessionHeader sent by an origin server could cause a heap overflow
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CVE-2021-22991
On BIG-IP versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.2.1, 14.1.x before 14.1.4, 13.1.x before 13.1.3.6, and 12.1.x before 12.1.5.3, undisclosed requests to a virtual server may be incorrectly handled by the Traffic Management Microkernel (TMM) URI normalization, which may trigger a buffer overflow, resulting in a DoS attack. In certain situations, it may theoretically allow bypass of URL based access control or remote code execution (RCE). Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.
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CVE-2020-8794
OpenSMTPD before 6.6.4 allows remote code execution because of an out-of-bounds read in mta_io in mta_session.c for multi-line replies. Although this vulnerability affects the client side of OpenSMTPD, it is possible to attack a server because the server code launches the client code during bounce handling.
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CVE-2019-16928
Exim 4.92 through 4.92.2 allows remote code execution, a different vulnerability than CVE-2019-15846. There is a heap-based buffer overflow in string_vformat in string.c involving a long EHLO command.
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CVE-2019-11500
In Dovecot before 2.2.36.4 and 2.3.x before 2.3.7.2 (and Pigeonhole before 0.5.7.2), protocol processing can fail for quoted strings. This occurs because '\0' characters are mishandled, and can lead to out-of-bounds writes and remote code execution.
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CVE-2018-6789
An issue was discovered in the base64d function in the SMTP listener in Exim before 4.90.1. By sending a handcrafted message, a buffer overflow may happen. This can be used to execute code remotely.
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CVE-2017-13696
A buffer overflow vulnerability lies in the web server component of Dup Scout Enterprise 9.9.14, Disk Savvy Enterprise 9.9.14, Sync Breeze Enterprise 9.9.16, and Disk Pulse Enterprise 9.9.16 where an attacker can craft a malicious GET request and exploit the web server component. Successful exploitation of the software will allow an attacker to gain complete access to the system with NT AUTHORITY / SYSTEM level privileges. The vulnerability lies due to improper handling and sanitization of the incoming request.
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CVE-2017-17932
A buffer overflow vulnerability exists in MediaServer.exe in ALLPlayer ALLMediaServer 0.95 and earlier that could allow remote attackers to execute arbitrary code and/or cause denial of service on the victim machine/computer via a long string to TCP port 888.
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CVE-2017-16943
The receive_msg function in receive.c in the SMTP daemon in Exim 4.88 and 4.89 allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free) via vectors involving BDAT commands.
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CVE-2017-6553
Buffer Overflow in Quest One Identity Privilege Manager for Unix before 6.0.0.061 allows remote attackers to obtain full access to the policy server via an ACT_ALERT_EVENT request that causes memory corruption in the pmmasterd daemon.
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CVE-2015-0240
The Netlogon server implementation in smbd in Samba 3.5.x and 3.6.x before 3.6.25, 4.0.x before 4.0.25, 4.1.x before 4.1.17, and 4.2.x before 4.2.0rc5 performs a free operation on an uninitialized stack pointer, which allows remote attackers to execute arbitrary code via crafted Netlogon packets that use the ServerPasswordSet RPC API, as demonstrated by packets reaching the _netr_ServerPasswordSet function in rpc_server/netlogon/srv_netlog_nt.c.
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CVE-2014-3913
Stack-based buffer overflow in AccessServer32.exe in Ericom AccessNow Server allows remote attackers to execute arbitrary code via a request for a non-existent file.
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CVE-2013-4730
Buffer overflow in PCMan's FTP Server 2.0.7 allows remote attackers to execute arbitrary code via a long string in a USER command.
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CVE-2012-6275
Multiple stack-based buffer overflows in AntDS.exe in BigAntSoft BigAnt IM Message Server allow remote attackers to have an unspecified impact via (1) the filename header in an SCH request or (2) the userid component in a DUPF request.
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CVE-2012-0202
Multiple stack-based buffer overflows in tm1admsd.exe in the Admin Server in IBM Cognos TM1 9.4.x and 9.5.x before 9.5.2 FP2 allow remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary code via crafted data.
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CVE-2011-4789
Stack-based buffer overflow in magentservice.exe in the server in HP LoadRunner 11.00 before patch 4 allows remote attackers to execute arbitrary code via a crafted size value in a packet. NOTE: it was originally reported that the affected product is HP Diagnostics Server, but HP states that "the vulnerable product is actually HP LoadRunner."
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CVE-2011-1567
Multiple stack-based buffer overflows in IGSSdataServer.exe 9.00.00.11063 and earlier in 7-Technologies Interactive Graphical SCADA System (IGSS) allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via crafted (1) ListAll, (2) Write File, (3) ReadFile, (4) Delete, (5) RenameFile, and (6) FileInfo commands in an 0xd opcode; (7) the Add, (8) ReadFile, (9) Write File, (10) Rename, (11) Delete, and (12) Add commands in an RMS report templates (0x7) opcode; and (13) 0x4 command in an STDREP request (0x8) opcode to TCP port 12401.
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CVE-2011-0517
Stack-based buffer overflow in Sielco Sistemi Winlog Pro 2.07.00 and earlier, when Run TCP/IP server is enabled, allows remote attackers to cause a denial of service (crash) and execute arbitrary code via a crafted 0x02 opcode to TCP port 46823.
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CVE-2010-4344
Heap-based buffer overflow in the string_vformat function in string.c in Exim before 4.70 allows remote attackers to execute arbitrary code via an SMTP session that includes two MAIL commands in conjunction with a large message containing crafted headers, leading to improper rejection logging.
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CVE-2010-4221
Multiple stack-based buffer overflows in the pr_netio_telnet_gets function in netio.c in ProFTPD before 1.3.3c allow remote attackers to execute arbitrary code via vectors involving a TELNET IAC escape character to a (1) FTP or (2) FTPS server.
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CVE-2010-3407
Stack-based buffer overflow in the MailCheck821Address function in nnotes.dll in the nrouter.exe service in the server in IBM Lotus Domino 8.0.x before 8.0.2 FP5 and 8.5.x before 8.5.1 FP2 allows remote attackers to execute arbitrary code via a long e-mail address in an ORGANIZER:mailto header in an iCalendar calendar-invitation e-mail message, aka SPR NRBY7ZPJ9V.
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CVE-2010-1318
Stack-based buffer overflow in the AgentX::receive_agentx function in AgentX++ 1.4.16, as used in RealNetworks Helix Server and Helix Mobile Server 11.x through 13.x and other products, allows remote attackers to execute arbitrary code via unspecified vectors.
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CVE-2009-2754
Integer signedness error in the authentication functionality in librpc.dll in the Informix Storage Manager (ISM) Portmapper service (aka portmap.exe), as used in IBM Informix Dynamic Server (IDS) 10.x before 10.00.TC9 and 11.x before 11.10.TC3 and EMC Legato NetWorker, allows remote attackers to execute arbitrary code via a crafted parameter size that triggers a stack-based buffer overflow.
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CVE-2010-0361
Stack-based buffer overflow in the WebDAV implementation in webservd in Sun Java System Web Server (aka SJWS) 7.0 Update 7 allows remote attackers to cause a denial of service (daemon crash) and possibly have unspecified other impact via a long URI in an HTTP OPTIONS request.
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CVE-2009-4006
Stack-based buffer overflow in the TEA decoding algorithm in RhinoSoft Serv-U FTP server 7.0.0.1, 9.0.0.5, and other versions before 9.1.0.0 allows remote attackers to execute arbitrary code via a long hexadecimal string.
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CVE-2009-2685
Stack-based buffer overflow in the login form in the management web server in HP Power Manager allows remote attackers to execute arbitrary code via the Login variable.
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CVE-2009-3031
Stack-based buffer overflow in the BrowseAndSaveFile method in the Altiris eXpress NS ConsoleUtilities ActiveX control 6.0.0.1846 in AeXNSConsoleUtilities.dll in Symantec Altiris Notification Server (NS) 6.0 before R12, Deployment Server 6.8 and 6.9 in Symantec Altiris Deployment Solution 6.9 SP3, and Symantec Management Platform (SMP) 7.0 before SP3 allows remote attackers to execute arbitrary code via a long string in the second argument.
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CVE-2009-3023
Buffer overflow in the FTP Service in Microsoft Internet Information Services (IIS) 5.0 through 6.0 allows remote authenticated users to execute arbitrary code via a crafted NLST (NAME LIST) command that uses wildcards, leading to memory corruption, aka "IIS FTP Service RCE and DoS Vulnerability."
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CVE-2009-1534
Buffer overflow in the Office Web Components ActiveX Control in Microsoft Office XP SP3, Office 2000 Web Components SP3, Office XP Web Components SP3, BizTalk Server 2002, and Visual Studio .NET 2003 SP1 allows remote attackers to execute arbitrary code via crafted property values, aka "Office Web Components Buffer Overflow Vulnerability."
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CVE-2009-2227
Stack-based buffer overflow in B Labs Bopup Communication Server 3.2.26.5460 allows remote attackers to execute arbitrary code via a crafted request to TCP port 19810.
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CVE-2009-0183
Stack-based buffer overflow in Remote Control Server in Free Download Manager (FDM) 2.5 Build 758 and 3.0 Build 844 allows remote attackers to execute arbitrary code via a long Authorization header in an HTTP request.
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CVE-2008-5416
Heap-based buffer overflow in Microsoft SQL Server 2000 SP4, 8.00.2050, 8.00.2039, and earlier; SQL Server 2000 Desktop Engine (MSDE 2000) SP4; SQL Server 2005 SP2 and 9.00.1399.06; SQL Server 2000 Desktop Engine (WMSDE) on Windows Server 2003 SP1 and SP2; and Windows Internal Database (WYukon) SP2 allows remote authenticated users to cause a denial of service (access violation exception) or execute arbitrary code by calling the sp_replwritetovarbin extended stored procedure with a set of invalid parameters that trigger memory overwrite, aka "SQL Server sp_replwritetovarbin Limited Memory Overwrite Vulnerability."
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CVE-2008-4322
Stack-based buffer overflow in RealFlex Technologies Ltd. RealWin Server 2.0, as distributed by DATAC, allows remote attackers to execute arbitrary code via a crafted FC_INFOTAG/SET_CONTROL packet.
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CVE-2008-0086
Buffer overflow in the convert function in Microsoft SQL Server 2000 SP4, 2000 Desktop Engine (MSDE 2000) SP4, and 2000 Desktop Engine (WMSDE) allows remote authenticated users to execute arbitrary code via a crafted SQL expression.
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CVE-2008-2158
Multiple stack-based buffer overflows in the Command Line Interface process in the Server Agent in EMC AlphaStor 3.1 SP1 for Windows allow remote attackers to execute arbitrary code via crafted TCP packets to port 41025.
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CVE-2008-2240
Stack-based buffer overflow in the Web Server service in IBM Lotus Domino before 7.0.3 FP1, and 8.x before 8.0.1, allows remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary code via a long Accept-Language HTTP header.
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CVE-2008-1611
Stack-based buffer overflow in TFTP Server SP 1.4 for Windows allows remote attackers to cause a denial of service or execute arbitrary code via a long filename in a read or write request.
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CVE-2007-6016
Multiple stack-based buffer overflows in the PVATLCalendar.PVCalendar.1 ActiveX control in pvcalendar.ocx in the scheduler component in the Media Server in Symantec Backup Exec for Windows Server (BEWS) 11d 11.0.6235 and 11.0.7170, and 12.0 12.0.1364, allow remote attackers to execute arbitrary code via a long (1) _DOWText0, (2) _DOWText1, (3) _DOWText2, (4) _DOWText3, (5) _DOWText4, (6) _DOWText5, (7) _DOWText6, (8) _MonthText0, (9) _MonthText1, (10) _MonthText2, (11) _MonthText3, (12) _MonthText4, (13) _MonthText5, (14) _MonthText6, (15) _MonthText7, (16) _MonthText8, (17) _MonthText9, (18) _MonthText10, or (19) _MonthText11 property value when executing the Save method. NOTE: the vendor states "Authenticated user involvement required," but authentication is not needed to attack a client machine that loads this control.
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CVE-2008-0356
Buffer overflow in the Independent Management Architecture (IMA) service in Citrix Presentation Server (MetaFrame Presentation Server) 4.5 and earlier, Access Essentials 2.0 and earlier, and Desktop Server 1.0 allows remote attackers to execute arbitrary code via an invalid size value in a packet to TCP port 2512 or 2513.
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CVE-2007-5243
Multiple stack-based buffer overflows in Borland InterBase LI 8.0.0.53 through 8.1.0.253, and WI 5.1.1.680 through 8.1.0.257, allow remote attackers to execute arbitrary code via (1) a long service attach request on TCP port 3050 to the (a) SVC_attach or (b) INET_connect function, (2) a long create request on TCP port 3050 to the (c) isc_create_database or (d) jrd8_create_database function, (3) a long attach request on TCP port 3050 to the (e) isc_attach_database or (f) PWD_db_aliased function, or unspecified vectors involving the (4) jrd8_attach_database or (5) expand_filename2 function.
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CVE-2007-4607
Buffer overflow in the EasyMailSMTPObj ActiveX control in emsmtp.dll 6.0.1 in the Quiksoft EasyMail SMTP Object, as used in Postcast Server Pro 3.0.61 and other products, allows remote attackers to execute arbitrary code via a long argument to the SubmitToExpress method, a different vulnerability than CVE-2007-1029. NOTE: this may have been fixed in version 6.0.3.15.
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CVE-2007-3216
Multiple buffer overflows in the LGServer component of CA (Computer Associates) BrightStor ARCserve Backup for Laptops and Desktops r11.1 allow remote attackers to execute arbitrary code via crafted arguments to the (1) rxsAddNewUser, (2) rxsSetUserInfo, (3) rxsRenameUser, (4) rxsSetMessageLogSettings, (5) rxsExportData, (6) rxsSetServerOptions, (7) rxsRenameFile, (8) rxsACIManageSend, (9) rxsExportUser, (10) rxsImportUser, (11) rxsMoveUserData, (12) rxsUseLicenseIni, (13) rxsLicGetSiteId, (14) rxsGetLogFileNames, (15) rxsGetBackupLog, (16) rxsBackupComplete, (17) rxsSetDataProtectionSecurityData, (18) rxsSetDefaultConfigName, (19) rxsGetMessageLogSettings, (20) rxsHWDiskGetTotal, (21) rxsHWDiskGetFree, (22) rxsGetSubDirs, (23) rxsGetServerDBPathName, (24) rxsSetServerOptions, (25) rxsDeleteFile, (26) rxsACIManageSend, (27) rxcReadBackupSetList, (28) rxcWriteConfigInfo, (29) rxcSetAssetManagement, (30) rxcWriteFileListForRestore, (31) rxcReadSaveSetProfile, (32) rxcInitSaveSetProfile, (33) rxcAddSaveSetNextAppList, (34) rxcAddSaveSetNextFilesPathList, (35) rxcAddNextBackupSetIncWildCard, (36) rxcGetRevisions, (37) rxrAddMovedUser, (38) rxrSetClientVersion, or (39) rxsSetDataGrowthScheduleAndFilter commands.
A CVE is listed as major when it is critical (CVSS 9.0 or higher) and either confirmed exploited in the wild with a real chance of more, or very likely to be exploited (EPSS 40% or more).