Description
In sshd in OpenSSH before 10.0, the DisableForwarding directive does not adhere to the documentation stating that it disables X11 and agent forwarding.
Affected products
openbsd: openssh; debian: debian linux
References8
- github.com/openssh/openssh-portable/commit/fc86875e6acb36401dfc… Patch
- ftp.openbsd.org/pub/OpenBSD/patches/7.6/common/013_ssh.patch.sig Product
- lists.mindrot.org/pipermail/openssh-unix-dev/2025-April/041879.… Mailing ListProductRelease Notes
- www.openssh.com/txt/release-10.0 Release Notes
- www.openssh.com/txt/release-7.4 Release Notes
- lists.debian.org/debian-lts-announce/2025/05/msg00008.html Mailing ListThird Party Advisory
- security.netapp.com/advisory/ntap-20250425-0002/ Third Party Advisory
- cert-portal.siemens.com/productcert/html/ssa-398330.html
Metrics
- CVSS 3.1
-
3.8
LOW
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N - EPSS — exploit probability
- 0% percentile: 10 · as of 7 November 2026
- CWE
- CWE-440
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.