GHSA-524r-6fxq-72wjCriticalCVSS 8.1
C-Kermit before 11.1.515 contains a heap buffer overflow vulnerability in putsrv() in ckcfns.c...
🔗 CVE IDs covered (1)
📋 Description
C-Kermit before 11.1.515 contains a heap buffer overflow vulnerability in putsrv() in ckcfns.c that allows malicious peers to write past the srvcmd buffer by sending crafted packets. Attackers can use Kermit repeat-count compression in server command, GET, or file-header packets to write attacker-chosen bytes beyond the heap buffer on servers or receiving instances.
🔗 References (7)
- https://github.com/OpenKermit/ckermit/security/advisories/GHSA-c5px-7h4c-gj8p
- https://nvd.nist.gov/vuln/detail/CVE-2026-129126
- https://github.com/OpenKermit/ckermit/commit/37e54720779237897bc6887efac42fe138817897
- https://github.com/OpenKermit/ckermit/blob/v11.0.514/ckcfns.c#L461
- https://github.com/OpenKermit/ckermit/releases/tag/v11.1.515
- https://www.vulncheck.com/advisories/c-kermit-before-11.1.515-heap-buffer-overflow-via-putsrv-packet-decoding
- https://github.com/advisories/GHSA-524r-6fxq-72wj