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CVE-2026-0966

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) authentication if the server's logging verbosity is set to `SSH_LOG_PACKET (3)` or higher. Successful exploitation could lead to a self-Denial of Service of the per-connection daemon process.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:887914bd5ee18e39c6d8446b4eedbc47b79891271de4783ed9675351613e7d44
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 9 assertions

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:enterprise_linux:9::appstream","cpe:/o:redhat:enterprise_linux:9::baseos"],"defaultStatus":"affected","packageName":"libssh","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"0:0.10.4-18.el9","versionType":"rpm"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e6ae938a4d0c8a6c3c446a5f5b49198240e05e28a6496fa67ddf188582a4dd3e · sha256:b349be6c0b4776b8… · /containers/cna/affected/2

{"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:hummingbird:1"],"defaultStatus":"affected","packageName":"libssh-main","product":"Red Hat Hardened Images","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"0.12.0-1.1.hum1","versionType":"rpm"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e6ae938a4d0c8a6c3c446a5f5b49198240e05e28a6496fa67ddf188582a4dd3e · sha256:b349be6c0b4776b8… · /containers/cna/affected/3

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:enterprise_linux:9::appstream","cpe:/o:redhat:enterprise_linux:9::baseos"],"defaultStatus":"affected","packageName":"libssh","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"0:0.10.4-18.el9","versionType":"rpm"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e6ae938a4d0c8a6c3c446a5f5b49198240e05e28a6496fa67ddf188582a4dd3e · sha256:b349be6c0b4776b8… · /containers/cna/affected/1

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:hummingbird:1"],"defaultStatus":"unaffected","packageName":"libssh2","product":"Red Hat Hardened Images","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e6ae938a4d0c8a6c3c446a5f5b49198240e05e28a6496fa67ddf188582a4dd3e · sha256:b349be6c0b4776b8… · /containers/cna/affected/7

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:7"],"defaultStatus":"unaffected","packageName":"libssh2","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e6ae938a4d0c8a6c3c446a5f5b49198240e05e28a6496fa67ddf188582a4dd3e · sha256:b349be6c0b4776b8… · /containers/cna/affected/5

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8"],"defaultStatus":"affected","packageName":"libssh","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e6ae938a4d0c8a6c3c446a5f5b49198240e05e28a6496fa67ddf188582a4dd3e · sha256:b349be6c0b4776b8… · /containers/cna/affected/6

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift:4"],"defaultStatus":"affected","packageName":"rhcos","product":"Red Hat OpenShift Container Platform 4","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e6ae938a4d0c8a6c3c446a5f5b49198240e05e28a6496fa67ddf188582a4dd3e · sha256:b349be6c0b4776b8… · /containers/cna/affected/8

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10.2"],"defaultStatus":"affected","packageName":"libssh","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"0:0.12.0-2.el10","versionType":"rpm"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e6ae938a4d0c8a6c3c446a5f5b49198240e05e28a6496fa67ddf188582a4dd3e · sha256:b349be6c0b4776b8… · /containers/cna/affected/0

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:6"],"defaultStatus":"unaffected","packageName":"libssh2","product":"Red Hat Enterprise Linux 6","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e6ae938a4d0c8a6c3c446a5f5b49198240e05e28a6496fa67ddf188582a4dd3e · sha256:b349be6c0b4776b8… · /containers/cna/affected/4

Affected products and versions

9 source assertions
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:enterprise_linux:9::appstream","cpe:/o:redhat:enterprise_linux:9::baseos"],"defaultStatus":"affected","packageName":"libssh","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"0:0.10.4-18.el9","versionType":"rpm"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e6ae938a4d0c8a6c3c446a5f5b49198240e05e28a6496fa67ddf188582a4dd3e · sha256:b349be6c0b4776b8… · /containers/cna/affected/2
{"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:hummingbird:1"],"defaultStatus":"affected","packageName":"libssh-main","product":"Red Hat Hardened Images","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"0.12.0-1.1.hum1","versionType":"rpm"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e6ae938a4d0c8a6c3c446a5f5b49198240e05e28a6496fa67ddf188582a4dd3e · sha256:b349be6c0b4776b8… · /containers/cna/affected/3
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:enterprise_linux:9::appstream","cpe:/o:redhat:enterprise_linux:9::baseos"],"defaultStatus":"affected","packageName":"libssh","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"0:0.10.4-18.el9","versionType":"rpm"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e6ae938a4d0c8a6c3c446a5f5b49198240e05e28a6496fa67ddf188582a4dd3e · sha256:b349be6c0b4776b8… · /containers/cna/affected/1
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:hummingbird:1"],"defaultStatus":"unaffected","packageName":"libssh2","product":"Red Hat Hardened Images","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e6ae938a4d0c8a6c3c446a5f5b49198240e05e28a6496fa67ddf188582a4dd3e · sha256:b349be6c0b4776b8… · /containers/cna/affected/7
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:7"],"defaultStatus":"unaffected","packageName":"libssh2","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e6ae938a4d0c8a6c3c446a5f5b49198240e05e28a6496fa67ddf188582a4dd3e · sha256:b349be6c0b4776b8… · /containers/cna/affected/5
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8"],"defaultStatus":"affected","packageName":"libssh","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e6ae938a4d0c8a6c3c446a5f5b49198240e05e28a6496fa67ddf188582a4dd3e · sha256:b349be6c0b4776b8… · /containers/cna/affected/6
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift:4"],"defaultStatus":"affected","packageName":"rhcos","product":"Red Hat OpenShift Container Platform 4","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e6ae938a4d0c8a6c3c446a5f5b49198240e05e28a6496fa67ddf188582a4dd3e · sha256:b349be6c0b4776b8… · /containers/cna/affected/8
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10.2"],"defaultStatus":"affected","packageName":"libssh","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"0:0.12.0-2.el10","versionType":"rpm"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e6ae938a4d0c8a6c3c446a5f5b49198240e05e28a6496fa67ddf188582a4dd3e · sha256:b349be6c0b4776b8… · /containers/cna/affected/0
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:6"],"defaultStatus":"unaffected","packageName":"libssh2","product":"Red Hat Enterprise Linux 6","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e6ae938a4d0c8a6c3c446a5f5b49198240e05e28a6496fa67ddf188582a4dd3e · sha256:b349be6c0b4776b8… · /containers/cna/affected/4

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H","version":"3.0"},"metric_type":"cvssV3_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e6ae938a4d0c8a6c3c446a5f5b49198240e05e28a6496fa67ddf188582a4dd3e · sha256:b349be6c0b4776b8… · /containers/cna/metrics/1/cvssV3_0

CWE assertions

1 source assertion
{"cweId":"CWE-124","description":"Buffer Underwrite ('Buffer Underflow')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e6ae938a4d0c8a6c3c446a5f5b49198240e05e28a6496fa67ddf188582a4dd3e · sha256:b349be6c0b4776b8… · /containers/cna/problemTypes/0/descriptions/0

Source references

6 source assertions
{"name":"RHSA-2026:18160","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:18160"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e6ae938a4d0c8a6c3c446a5f5b49198240e05e28a6496fa67ddf188582a4dd3e · sha256:b349be6c0b4776b8… · /containers/cna/references/0
{"name":"RHSA-2026:18683","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:18683"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e6ae938a4d0c8a6c3c446a5f5b49198240e05e28a6496fa67ddf188582a4dd3e · sha256:b349be6c0b4776b8… · /containers/cna/references/1
{"name":"RHSA-2026:7067","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:7067"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e6ae938a4d0c8a6c3c446a5f5b49198240e05e28a6496fa67ddf188582a4dd3e · sha256:b349be6c0b4776b8… · /containers/cna/references/2
{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-0966"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e6ae938a4d0c8a6c3c446a5f5b49198240e05e28a6496fa67ddf188582a4dd3e · sha256:b349be6c0b4776b8… · /containers/cna/references/3
{"name":"RHBZ#2433121","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2433121"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e6ae938a4d0c8a6c3c446a5f5b49198240e05e28a6496fa67ddf188582a4dd3e · sha256:b349be6c0b4776b8… · /containers/cna/references/4
{"url":"https://www.libssh.org/2026/02/10/libssh-0-12-0-and-0-11-4-security-releases/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e6ae938a4d0c8a6c3c446a5f5b49198240e05e28a6496fa67ddf188582a4dd3e · sha256:b349be6c0b4776b8… · /containers/cna/references/5

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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