Bundesamt für Sicherheit in der Informationstechnik Fedora · OpenSSH: Mehrere Schwachstellen
Affects Bundesamt für Sicherheit in der Informationstechnik FedoraSource GCVE Database
Mentioned vulnerabilities
Not known to be exploited · CVSS 4.3 Medium.
Data as of 12 Nov 2026, 12:33 UTC
Thin evidence
One scorer or none| CNA (redhat) | CVSS 3.1 | 4.3 |
|---|
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:LExploitation evidence
Disclosed: evidence found.
CVE published 23 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 12 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 10openssh | Affected– | Fixed in– |
| Red Hat Enterprise Linux 10.0 Extended Update Supportopenssh | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8openssh | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Supportopenssh | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-Onopenssh | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Supportopenssh | Affected– | Fixed in– |
AI-suggested
Red Hat has released security updates for OpenSSH in Red Hat Enterprise Linux 10 that address these vulnerabilities. Users should apply the updates as described in the Red Hat advisory RHSA-2026:47757. No additional mitigation steps are indicated beyond applying the official patches.
Description
Multiple security vulnerabilities have been identified in OpenSSH as used in Red Hat Enterprise Linux 10. These include a local man-in-the-middle attack on X11 forwarding, a client-side denial of service due to a double free, a heap out-of-bounds read, a use-after-free during host key re-exchange, and a file misplacement issue in scp. Red Hat has released security updates addressing these issues.
References
- wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2039.json (opens in a new tab)
- wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2039 (opens in a new tab)
- github.com/advisories/GHSA-28F3-55MQ-PP68 (opens in a new tab)
- github.com/advisories/GHSA-5MX2-7G4J-9M39 (opens in a new tab)
- github.com/advisories/GHSA-WCVF-3X75-J4C6 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2462351 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2462493 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2462250 (opens in a new tab)
- bodhi.fedoraproject.org/updates/FEDORA-2026-a2c682a975 (opens in a new tab)
- bodhi.fedoraproject.org/updates/FEDORA-2026-95b955a09b (opens in a new tab)
- bodhi.fedoraproject.org/updates/FEDORA-2026-a80275b42d (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:47757 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:47755 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:47756 (opens in a new tab)
- linux.oracle.com/errata/ELSA-2026-47757.html (opens in a new tab)
- errata.build.resf.org/RLSA-2026:47757 (opens in a new tab)
- errata.build.resf.org/RLSA-2026:47756 (opens in a new tab)
- errata.build.resf.org/RLSA-2026:47755 (opens in a new tab)
- linux.oracle.com/errata/ELSA-2026-47755.html (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:54387 (opens in a new tab)