CVE-2026-123158

Exploitation

Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2026-11-09. Federal remediation due 2026-11-12.

SSVC decision

• ExploitationactiveCISA reports credible evidence of active exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

1.01% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 63.4% of scored records. A rank, not a probability.

NVD base score

8.1 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Analyzed. NVD last modified this record on 2026-11-10.

Red Hat severity

Critical. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-11-05 15:46Z5 DAYS AGO

Last updated

2026-11-10 04:55Z11 HR AGO

Reserved

2026-11-05

Assigning CNA

mitre

Record state

PUBLISHED

Severity

High (CVSS 8.1)

CNA CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

• CWE-394Unexpected Status Code or Return ValueBase
• CWE-303Incorrect Implementation of Authentication AlgorithmBase

Data version

5.2

Document digest

2ec47e51320800a76affe78b053c8a4fdd4d597d9c9fe1ad8d030b9d2251355d

• www.openssh.orghttps://www.openssh.org/releasenotes.html#10.6p2
• github.comhttps://github.com/openssh/openssh-portable/commit/4353fdc43ef646c43a8dda7025cc1a898caf1482
• news.ycombinator.comhttps://news.ycombinator.com/item?id=50377976
• news.ycombinator.comhttps://news.ycombinator.com/item?id=50378228
• marc.infohttps://marc.info/?l=openssh-unix-dev&m=179388064263131&w=2
• hachyderm.iohttps://hachyderm.io/@damienmiller/117563026759098135
• github.comhttps://github.com/predkambrij/sshhole-repro
• github.comhttps://github.com/leonjza/sshhole-lab
• alpinelinux.orghttps://alpinelinux.org/posts/2026-11-05-openssh-password-authentication-bypass/
• news.ycombinator.comhttps://news.ycombinator.com/item?id=50379704
• github.comhttps://github.com/google/goonami-scanner/pull/277
• github.comhttps://github.com/coollabsio/coolify/discussions/12484
• github.comhttps://github.com/panubo/docker-sshd/issues/93
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/11/09/27
• sshhole.comhttps://sshhole.comexploittechnical-description
• sshole.events.greynoise.iohttps://sshole.events.greynoise.io/third-party-advisory
• isc.sans.eduhttps://isc.sans.edu/diary.html?storyid=33498third-party-advisory
• www.cisa.govhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-123158government-resource