CVE-2026-129123

Name	CVE-2026-129123
Description	C-Kermit 8.0.200 before 11.1.515 contains a buffer overflow vulnerability in getreply() in ckcftp.c that allows malicious FTP servers to overwrite client memory by sending overlong security replies. Attackers controlling or intercepting an FTP server can send long PBSZ replies after AUTH TLS, or long ADAT replies in GSSAPI, Kerberos 4, and SRP builds, overflowing the static reply_buf with attacker-controlled bytes.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
ckermit (PTS)	bookworm	402~beta08-1	vulnerable
	trixie	416~beta12-1+deb13u1	vulnerable
	forky	1:11.1.515-2	fixed
	sid	1:11.1.517-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
ckermit	source	(unstable)	1:11.1.515-1

Notes

[trixie] - ckermit <no-dsa> (Minor issue)
https://github.com/OpenKermit/ckermit/security/advisories/GHSA-c5px-7h4c-gj8p
Fixed by: https://github.com/OpenKermit/ckermit/commit/39ab009a365b97632e9975e1266fa618c4bdc59f (v11.1.515)
Fixed by: https://github.com/OpenKermit/ckermit/commit/bec28a4d544031fa07a07aacba3df5dd1202ef69 (v11.1.515)