CVE-2026-129118

Name	CVE-2026-129118
Description	C-Kermit 8.0.200 before 11.1.515 contains an improper certificate hostname validation vulnerability that allows attackers to impersonate hosts by abusing wildcard matching in dNSName_cmp() in ck_ssl.c. Attackers holding a trusted certificate with over-matching names containing asterisks, question marks, brackets, or empty labels can intercept credentials and data over Telnet, FTP, and HTTP TLS connections.
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-5pc4-gh6q-5h4w
Fixed by: https://github.com/OpenKermit/ckermit/commit/8c60a2bd70f5a78e77ce5d140a17e7a9cdcd5e60 (v11.1.515)