CVE-2025-15661
libssh2 - Heap Buffer Over-read via sftp_symlink() in sftp.c
CVE-2025-15661 is fixed in 7 products on 1 platform, first by libssh2-1t64 1.11.1-1ubuntu0.26.04.2, released June 18, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
6.5
Moderate
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0065
51st percentile
out-of-bounds heap read vulnerability in the `sftp_symlink()` function in `src/sftp.c` (bsc#1268546).
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| libssh2 · Debian 12.15 (bookworm) | 1.10.0-3+deb12u1 | DEBIAN-CVE-2025-15661 | Jun 26, 2026 |
| libssh2 · Debian 13.5 (trixie) | 1.11.1-1+deb13u1 | DEBIAN-CVE-2025-15661 | Jun 26, 2026 |
| libssh2 · Debian 14 | 1.11.1-4 | DEBIAN-CVE-2025-15661 | Jun 26, 2026 |
| libssh2 · Fedora 43 | 1.11.1-9.fc43 | FEDORA-2026-EED9E67393 | Jun 24, 2026 |
| libssh2-1t64 · Ubuntu 24.04.5 LTS (noble) | 1.11.0-4.1ubuntu0.24.04.2 | libssh2-1t64 1.11.0-4.1ubuntu0.24.04.2 | Jul 3, 2026 |
| libssh2-1t64 · Ubuntu 25.10 (questing) | 1.11.1-1ubuntu0.25.10.2 | libssh2-1t64 1.11.1-1ubuntu0.25.10.2 | Jul 3, 2026 |
| libssh2-1t64 · Ubuntu 26.04.1 LTS (resolute) | 1.11.1-1ubuntu0.26.04.2 | libssh2-1t64 1.11.1-1ubuntu0.26.04.2 | Jun 18, 2026 |
| libssh2-debuginfo · Fedora 43 | 1.11.1-9.fc43 | FEDORA-2026-EED9E67393 | Jun 24, 2026 |
| libssh2-debugsource · Fedora 43 | 1.11.1-9.fc43 | FEDORA-2026-EED9E67393 | Jun 24, 2026 |
| libssh2-devel · Fedora 43 | 1.11.1-9.fc43 | FEDORA-2026-EED9E67393 | Jun 24, 2026 |
| libssh2-docs · Fedora 43 | 1.11.1-9.fc43 | FEDORA-2026-EED9E67393 | Jun 24, 2026 |
| libssh2_org · opensuse-leap 16.0 | 1.11.1-160000.5.1 | OPENSUSE-SU-2026:21549-1 | Aug 10, 2026 |
| libssh2_org · sles 15.6 | 1.11.0-150600.20.6.1 | SUSE-SU-2026:3541-1 | Aug 10, 2026 |
| libssh2_org · sles 15.7 | 1.11.0-150600.20.6.1 | SUSE-SU-2026:3541-1 | Aug 10, 2026 |
| libssh2_org · sles 16.0 | 1.11.1-160000.5.1 | SUSE-SU-2026:23225-1 | Aug 10, 2026 |
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