RHSA-2026:69129HighCVSS 7.5

Red Hat Security Advisory: openssh security update

Published
September 21, 2026
Last Modified
September 21, 2026

🔗 CVE IDs covered (5)

CVE-2026-73282 →CVE-2026-73283 →CVE-2026-59995 →CVE-2026-59999 →CVE-2026-73281 →

📋 Description

CVE-2026-59995 — openssh: OpenSSH: sftp client allows attacker to control downloaded file location CVE-2026-59999 — openssh: OpenSSH sshd: Security bypass due to incorrect handling of forwarding and tunneling options CVE-2026-73281 — openssh: OpenSSH: ssh-agent allows remote execution of local operations CVE-2026-73282 — openssh: OpenSSH: Information disclosure and data corruption via use-after-free in ssh client CVE-2026-73283 — openssh: OpenSSH: Tunnel forwarding restriction bypass

🎯 Affected products91

  • Red Hat Enterprise Linux AppStream (v. 10)
  • Red Hat Enterprise Linux BaseOS (v. 10)
  • openssh-0:9.9p1-27.el10_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • openssh-0:9.9p1-27.el10_2.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • openssh-0:9.9p1-27.el10_2.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • openssh-0:9.9p1-27.el10_2.src as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • openssh-0:9.9p1-27.el10_2.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • openssh-askpass-0:9.9p1-27.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • openssh-askpass-0:9.9p1-27.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • openssh-askpass-0:9.9p1-27.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • openssh-askpass-0:9.9p1-27.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • openssh-askpass-debuginfo-0:9.9p1-27.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • openssh-askpass-debuginfo-0:9.9p1-27.el10_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • openssh-askpass-debuginfo-0:9.9p1-27.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • openssh-askpass-debuginfo-0:9.9p1-27.el10_2.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • openssh-askpass-debuginfo-0:9.9p1-27.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • openssh-askpass-debuginfo-0:9.9p1-27.el10_2.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • openssh-askpass-debuginfo-0:9.9p1-27.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • openssh-askpass-debuginfo-0:9.9p1-27.el10_2.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • openssh-clients-0:9.9p1-27.el10_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • openssh-clients-0:9.9p1-27.el10_2.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • openssh-clients-0:9.9p1-27.el10_2.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • openssh-clients-0:9.9p1-27.el10_2.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • openssh-clients-debuginfo-0:9.9p1-27.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • openssh-clients-debuginfo-0:9.9p1-27.el10_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • openssh-clients-debuginfo-0:9.9p1-27.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • openssh-clients-debuginfo-0:9.9p1-27.el10_2.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • openssh-clients-debuginfo-0:9.9p1-27.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • openssh-clients-debuginfo-0:9.9p1-27.el10_2.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • openssh-clients-debuginfo-0:9.9p1-27.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • +61 more not shown

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Workaround: To mitigate this issue, avoid using the `sftp server:/path .` command when connecting to untrusted or potentially malicious SFTP servers. Exercise caution and verify the authenticity of SFTP servers before initiating file transfers, especially when using commands that implicitly define the download destination, and also avoid running SFTP sessions with elevated privileges (such as root). Workaround: To mitigate this issue, if `DisableForwarding=yes` is set in `/etc/ssh/sshd_config` to prevent all forwarding, ensure that `PermitTunnel` is explicitly set to `no` in the same configuration file. This will enforce the intended security policy. After modifying `/etc/ssh/sshd_config`, restart the `sshd` service for the changes to take effect. This may temporarily interrupt active SSH sessions. Workaround: Avoid using ssh-agent forwarding to untrusted remote hosts, or disable agent forwarding entirely by removing `ForwardAgent yes` from SSH configuration. If agent forwarding is required, avoid locking the agent while forwarded sessions are active. Workaround: Avoid issuing dynamic remote-forwarding commands over active SSH multiplexing connections, or disable socket multiplexing by setting ControlMaster no in ~/.ssh/config. Workaround: Set PermitTunnel no in /etc/ssh/sshd_config to disable TUN/TAP tunnel forwarding server-wide. Alternatively, restrict tunnel permissions for specific users or groups using Match blocks in sshd_config or explicit no-tun directives in authorized_keys.

🔗 References (8)