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Debian libssh2 Critical Memory Disclosure DoS Exec Code DSA-6365-1

debian
Calendar Grey June 25, 2026
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Numerous security flaws found in libssh2 could lead to memory disclosure, DoS, or arbitrary code execution. Update advised.
Multiple security vulnerabilities were discovered in libssh2, a client-side C library implementing the SSH2 protocol which could result in memory disclosure, denial of service or p...
Topics%20covered

Topics Covered

security advisory denial of service debian arbitrary code execution memory disclosure libssh2

Summary

For the stable distribution (trixie), these problems have been fixed in
version 1.11.1-1+deb13u1.

We recommend that you upgrade your libssh2 packages.

For the detailed security status of libssh2 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/libssh2

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/



Severity
critical
Lowest
Low
Medium
High
Critical

Package: libssh2
CVE ID: CVE-2025-15661 CVE-2026-7598 CVE-2026-55199 CVE-2026-55200

Topics%20covered

Topics Covered

security advisory denial of service debian arbitrary code execution memory disclosure libssh2

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