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openssh: Local MITM of X11 forwarding via abstract UNIX socket pre-binding in Red Hat Enterprise Linux OpenSSH client versions

🗓️ 08 Jul 2026 13:09:32Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 3 Views

Local attacker can hijack client eleven forwarding by pre-binding abstract socket, exposing forwarded traffic.

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ATTACKERKB
CVE-2026-55655
23 Jun 202603:36
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23 Jun 202603:36
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CVE-2026-55655 Openssh: local mitm of x11 forwarding via abstract unix socket pre-binding in red hat enterprise linux openssh client versions
23 Jun 202603:36
cvelist
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CVE-2026-55655
23 Jun 202603:36
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EUVD-2026-38413
23 Jun 202603:36
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Fedora
[SECURITY] Fedora 44 Update: openssh-10.2p1-12.fc44
9 Jul 202600:57
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Fedora
[SECURITY] Fedora 43 Update: openssh-10.0p1-10.fc43
11 Jul 202600:55
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Tenable Nessus
Fedora 43 : openssh (2026-95b955a09b)
11 Jul 202600:00
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Tenable Nessus
Fedora 44 : openssh (2026-a80275b42d)
9 Jul 202600:00
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Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Hardened Imagesanyaarch64openssh10.3p1-6.hum1openssh-10.3p1-6.hum1.aarch64.rpm
Red Hat Hardened Imagesanyx86_64openssh10.3p1-6.hum1openssh-10.3p1-6.hum1.x86_64.rpm

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19 Jul 2026 20:16Current
6Medium risk
Vulners AI Score6
CVSS 3.15 - 6.1
EPSS0.0009
SSVC
3