7.3highHigh
CVE-2026-7598
Libssh2 Libssh2
A security vulnerability has been detected in libssh2 up to 1.11.1. The impacted element is the function userauth_password of the file src/userauth.c. Such manipulation of the argument username_len/password_len leads to integer overflow. The attack may be launched remotely. The name of the patch is 256d04b60d80bf1190e96b0ad1e91b2174d744b1. A patch should be applied to remediate this issue.
Exploitation status
- A vendor advisory or patch reference has been published.
What the metrics mean
- It is reachable over a network, without needing local access.
- For an attacker who can reach it, no special conditions are needed to exploit it.
- To exploit it, no account is needed.
- Beyond that, no action by a user is required.
Scoring
- CVSS
- 7.3 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L- CVSS v4
- 6.9
- Weakness
- CWE-189
- Assigned by
- cna@vuldb.com
Dates
- Published
- 2026-05-01
- Last modified
- 2026-09-01
- Sources
- NVD
Affected products
- Libssh2 Libssh2- 1.11.1
As listed in the NVD configuration data. Not a statement about your estate.
References
- https://github.com/libssh2/libssh2/
- https://github.com/libssh2/libssh2/commit/256d04b60d80bf1190e96b0ad1e91b2174d744b1
- https://github.com/libssh2/libssh2/pull/1858
- https://vuldb.com/submit/805564
- https://vuldb.com/vuln/360555
- https://vuldb.com/vuln/360555/cti
- https://access.redhat.com/errata/RHSA-2026:16736
- https://access.redhat.com/errata/RHSA-2026:61752
- https://access.redhat.com/errata/RHSA-2026:7021
- https://access.redhat.com/security/cve/CVE-2026-7598
- https://bugzilla.redhat.com/show_bug.cgi?id=2464597
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-7598.json
- https://vuldb.com/submit/805564