Bug 2573256 (CVE-2026-129117) - CVE-2026-129117 ckermit: ckermit: Server impersonation via improper certificate validation
Summary: CVE-2026-129117 ckermit: ckermit: Server impersonation via improper certifica...
Keywords:
Status: NEW
Alias: CVE-2026-129117
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-11-13 16:32 UTC by OSIDB Bzimport
Modified: 2026-11-13 16:49 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-11-13 16:32:42 UTC 
C-Kermit 8.0.200 before 11.1.515 contains an improper certificate validation vulnerability that allows machine-in-the-middle attackers to impersonate Telnet servers because ssl_reply() never calls ssl_check_server_name(). Attackers can refuse START-TLS, offer Telnet AUTHENTICATION SSL, and present any trusted CA certificate to capture user credentials and session data.
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