Vulnerability record
CVE-2026-129125
The short answer
CVE-2026-129125 affects OpenKermit C-Kermit and is rated critical (CVSS 9.2). It is not in CISA's KEV catalog; EPSS puts the chance of exploitation in the next 30 days at 0.68%.
What it is
C-Kermit 6.0.192 before 11.1.515 contains a remote code execution vulnerability that allows Kermit clients to run shell commands on servers with host commands disabled by abusing REMOTE QUERY evaluation. Attackers can send a REMOTE QUERY invoking the command function, or define a macro via REMOTE ASSIGN and call execute to reach RUN, bypassing the nopush restriction and DISABLE HOST.
Weakness: CWE-863.
Severity
9.2 critical
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/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
Exploited (CISA KEV)
Not listed
CISA lists confirmed exploitation only
EPSS, next 30 days
0.68%
Higher than 53% of scored CVEs
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Attack requirements
- Present
- Privileges required
- None
- User interaction
- None
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Affected products
C-Kermit. NVD's record lists the exact affected versions.
References
- github.com/OpenKermit/ckermit/blob/v11.0.514/ckcpro.w#L2544
- github.com/OpenKermit/ckermit/commit/85ef1da670cee132ea2d8e4eb759bab310ff73c9
- github.com/OpenKermit/ckermit/releases/tag/v11.1.515
- github.com/OpenKermit/ckermit/security/advisories/GHSA-c5px-7h4c-gj8p
- www.vulncheck.com/advisories/c-kermit-6.0.192-before-11.1.515-command-execution-via-remote-query
Questions
Is CVE-2026-129125 being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog as of 2026-11-14. FIRST's EPSS estimates a 0.68% chance of exploitation in the next 30 days.
How do I fix CVE-2026-129125?
Follow the vendor advisory in the references below. NVD lists the affected versions under its configurations.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Deferred. The description is NVD's text, quoted as published.
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