Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Fixed packages 3

Vulnerabilities 3

• High 7.8
  CVE-2025-14821

  Libssh: libssh: insecure default configuration leads to local man-in-the-middle attacks on windows

  A flaw was found in libssh. This vulnerability allows local man-in-the-middle attacks, security downgrades of SSH (Secure Shell) connections, and manipulation of trusted host information, posing a significant risk to the confidentiality, integrity, and availa…

  Red Hat Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 7 Linux Wolfi
  Apr 7, 2026
• Medium 6.5
  CVE-2026-0966

  Libssh: libssh: denial of service via zero-length input in ssh_get_hexa()

  A flaw was found in libssh. The API function `ssh_get_hexa()` is vulnerable to a denial of service when processing zero-length input. This can be exploited remotely by an attacker during GSSAPI (Generic Security Service Application Program Interface) authenti…

  Red Hat Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 7 Linux Debian Ubuntu Azure Linux Alpine
  Mar 26, 2026
• Medium 5.3
  CVE-2026-3731

  libssh SFTP Extension Name sftp.c sftp_extensions_get_data out-of-bounds

  A weakness has been identified in libssh up to 0.11.3. The impacted element is the function sftp_extensions_get_name/sftp_extensions_get_data of the file src/sftp.c of the component SFTP Extension Name Handler. Executing a manipulation of the argument idx can…

  libssh libssh libssh Debian Ubuntu Azure Linux
  Mar 8, 2026

References

• article
  https://images.redhat.com/
• report
  https://access.redhat.com/security/cve/CVE-2026-3731
• article
  https://access.redhat.com/security/updates/classification/
• report
  https://access.redhat.com/security/cve/CVE-2026-0966
• report
  https://access.redhat.com/security/cve/CVE-2025-14821
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_7067.json
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2423148
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-14821
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-14821
• article
  https://www.libssh.org/2026/02/10/libssh-0-12-0-and-0-11-4-security-releases/
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2433121
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-0966
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-0966
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2445579
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-3731
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-3731
• article
  https://gitlab.com/libssh/libssh-mirror/-/commit/855a0853ad3abd4a6cd85ce06fce6d8d4c7a0b60
• article
  https://vuldb.com/?ctiid.349709
• article
  https://vuldb.com/?id.349709
• article
  https://vuldb.com/?submit.767120
• article
  https://www.libssh.org/files/0.12/libssh-0.12.0.tar.xz
• article
  https://www.libssh.org/security/advisories/libssh-2026-sftp-extensions.txt