Vulnerability Description
pageant provides a PageantStream type that implements AsyncRead and AsyncWrite traits and can be used to communicate with a running Pageant instance. From 0.2.0 until 0.2.5, PageantStream::new in pageant/src/wmmessage.rs trusts a peer-controlled four-byte length prefix and buffers until len + 4 bytes are available without checking the fixed _AGENT_MAX_MSGLEN transport capacity. An application that bridges an SSH forwarded-agent channel to the raw stream can allow a malicious server to force large allocations or retain a partially filled frame, causing client memory exhaustion. This issue is fixed in version 0.2.5.
Related Weaknesses (CWE)
References
- https://github.com/Eugeny/russh/commit/69e4b55513eaa8ac9d2ad4236f13171fc164e10a
- https://github.com/Eugeny/russh/releases/tag/v0.65.0
- https://github.com/Eugeny/russh/security/advisories/GHSA-662x-8wvj-2276
FAQ
What is CVE-2026-116775?
CVE-2026-116775 is a documented vulnerability. pageant provides a PageantStream type that implements AsyncRead and AsyncWrite traits and can be used to communicate with a running Pageant instance. From 0.2.0 until 0.2.5, PageantStream::new in page...
How severe is CVE-2026-116775?
CVSS scoring is not yet available for CVE-2026-116775. Check NVD for updates.
Is there a patch for CVE-2026-116775?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.