CVE-2014-4049

5.1 MEDIUM 11% exploit odds Fix listed Memory safety Web app

What it is

Heap-based buffer overflow in the php_parserr function in ext/standard/dns.c in PHP 5.6.0beta4 and earlier allows remote servers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted DNS TXT record, related to the dns_get_record function.

At a glance

Exploitability: Can be exploited over the network without logging in. Limited direct impact.
Exploit odds: 10.9% chance of exploitation in the next 30 days (EPSS). Higher than most.
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2014-06-18 19:55 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 00:09 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 10.9% in the next 30 days (EPSS).
Severity: 5.1 MEDIUM (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2014-06-18 19:55 UTC
Last modified: 2026-06-17 00:09 UTC
Exploit probability: 10.9% · EPSS, next 30 days
Weakness: CWE-119 · Buffer errors
Record status: Modified

Affected

Opensuse 11.3
PHP < 5.3.29
PHP < 5.4.30
PHP < 5.5.14
PHP 5.6.0
Debian Linux 7.0
Debian Linux 8.0

Attack profile CVSS 2.0 · 5.1

Attack vector: Network
Complexity: High
Authentication: None
Confidentiality: Partial
Integrity: Partial
Availability: Partial

Raw vector

AV:N/AC:H/Au:N/C:P/I:P/A:P

Is it in your code?

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Fix and advisories

References

NVD record · CVE.org record