CVE detail
CVE-2026-123158: OpenBSD OpenSSH Unexpected Status Code or Return Value Vulnerability
Source: CISA Known Exploited Vulnerabilities catalog · back to feed
Vendor / product
OpenBSD · OpenSSH
- Date added (KEV)
- Nov 09, 2026
- CISA due date
- Nov 12, 2026
- Ransomware campaign use
- Unknown
Required action
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Vendor fix: Vendor advisory
Scorifya interpretation
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Plain English
Technical detail
From CISA
OpenBSD OpenSSH on Linux contains an unexpected status code or return value vulnerability that could allow for authentication bypass.
This vulnerability affects an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see: https://www.openssh.org/releasenotes.html ; https://alpinelinux.org/posts/2026-11-05-openssh-password-authentication-bypass/ ; https://github.com/openssh/openssh-portable/commit/4353fdc43ef646c43a8dda7025cc1a898caf1482 ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-123158
See what attackers can see on your domain
This vulnerability is on CISA's Known Exploited Vulnerabilities list, so it is being exploited in the wild right now. Scorifya can't test for OpenBSD directly, but in about 30 seconds it shows what your own domain exposes publicly across TLS, security headers, DNS, and cookies: the surface attackers probe first.
SOC 2 compliance
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See Scorifya Controls →References
- https://marc.info/?l=openssh-unix-dev&m=179388064263131&w=2Mailing ListVendor Advisory
- https://github.com/openssh/openssh-portable/commit/4353fdc43ef646c43a8dda7025cc1a898caf1482Patch
- https://github.com/leonjza/sshhole-labExploitThird Party Advisory
- https://github.com/predkambrij/sshhole-reproExploitThird Party Advisory
- https://hachyderm.io/@damienmiller/117563026759098135Third Party Advisory
- https://news.ycombinator.com/item?id=50377976Issue Tracking
- https://news.ycombinator.com/item?id=50378228Issue Tracking
- https://www.openssh.org/releasenotes.html#10.6p2Release Notes
- https://alpinelinux.org/posts/2026-11-05-openssh-password-authentication-bypass/Third Party Advisory
- https://github.com/coollabsio/coolify/discussions/12484Third Party Advisory
- https://github.com/google/goonami-scanner/pull/277Third Party Advisory
- https://github.com/panubo/docker-sshd/issues/93Third Party Advisory
- https://news.ycombinator.com/item?id=50379704Issue Tracking
- https://isc.sans.edu/diary.html?storyid=33498Not Applicable
- https://sshhole.com/Third Party Advisory
- https://sshole.events.greynoise.io/Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-123158US Government Resource
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