CVE-20XX-?
agent?

CVE-2026-129122

7.7 HIGH Fix listed Memory safety

What it is

C-Kermit 6.0.192 before 11.1.515 contains a buffer overflow vulnerability in tn_snenv() in ckctel.c that allows malicious Telnet servers to corrupt client memory via crafted NEW-ENVIRON SEND subnegotiation. Malicious or machine-in-the-middle servers can send oversized variable names before authentication, overflowing a 16-byte stack buffer and a miscomputed heap buffer to corrupt stack and heap memory.

At a glance

Exploitability
Can be exploited over the network without logging in, but needs a user to act. High risk of data exposure, data tampering, service disruption.
Fix
A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

  1. ReservedThe CVE id was reserved by its CNA
  2. PublishedDisclosed publicly on CVE.org and NVD
  3. Last updatedMost recent change to the record

Why it ranks here

Details

Published
Last modified
Weakness
CWE-787 · Out-of-bounds write
Record status
Deferred

Attack profile CVSS 4.0 · 7.7

Attack vector
Network
Complexity
High
Attack requirements
None
Privileges needed
None
User interaction
Passive
Confidentiality
High
Integrity
High
Availability
High
Raw vector

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2026-129122.md and follow it. Check whether this project is affected by CVE-2026-129122. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

· More options · Status badge

Meme: I wake up, CVE-2026-129122
Download Square Reddit

Fix and advisories

References

NVD record · CVE.org record