Is CVE-2026-0967 in the CISA KEV catalog?

No. CVE-2026-0967 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-0967?

CVE-2026-0967 has a CVSS v3 base score of 2.2 (Low).

What is the EPSS score for CVE-2026-0967?

CVE-2026-0967 has an EPSS score of 0.22% (13th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-0967?

Upgrade libssh on debian unstable to 0.12.0-1 or later. Fixes are available for 13 affected products.

CVE & CISA-KEV Catalog

CVE-2026-0967

LOW

2.2

CVSS v3

NVD

Description

A flaw was found in libssh. A remote attacker, by controlling client configuration files or known_hosts files, could craft specific hostnames that when processed by the `match_pattern()` function can lead to inefficient regular expression backtracking. This can cause timeouts and resource exhaustion, resulting in a Denial of Service (DoS) for the client.

CWE-1333

How to fix

Remediation Available

libsshDebian

Fixed in:0.12.0-1CVE-2026-0967

libsshRocky

Fixed in:0:0.12.0-2.el10RHSA-2026:18160

Fixed in:0:0.10.4-18.el9RHSA-2026:18683

libsshRed Hat / RHEL

Fixed in:0:0.12.0-2.el10RHSA-2026:18160

Fixed in:0:0.10.4-18.el9RHSA-2026:18683

libssh-configRed Hat / RHEL

Fixed in:0:0.12.0-2.el10RHSA-2026:18160

Fixed in:0:0.10.4-18.el9RHSA-2026:18683

libssh-configRocky

Fixed in:0:0.12.0-2.el10RHSA-2026:18160

Fixed in:0:0.10.4-18.el9RHSA-2026:18683

libssh-debuginfoRocky

Fixed in:0:0.12.0-2.el10RHSA-2026:18160

Fixed in:0:0.10.4-18.el9RHSA-2026:18683

libssh-debuginfoRed Hat / RHEL

Fixed in:0:0.12.0-2.el10RHSA-2026:18160

Fixed in:0:0.10.4-18.el9RHSA-2026:18683

libssh-debugsourceRed Hat / RHEL

Fixed in:0:0.12.0-2.el10RHSA-2026:18160

Fixed in:0:0.10.4-18.el9RHSA-2026:18683

libssh-debugsourceRocky

Fixed in:0:0.12.0-2.el10RHSA-2026:18160

Fixed in:0:0.10.4-18.el9RHSA-2026:18683

libssh-develRed Hat / RHEL

Fixed in:0:0.12.0-2.el10RHSA-2026:18160

Fixed in:0:0.10.4-18.el9RHSA-2026:18683

libssh-develRocky

Fixed in:0:0.12.0-2.el10RHSA-2026:18160

Fixed in:0:0.10.4-18.el9RHSA-2026:18683

libsshUbuntu

Fixed in:0.6.3-4.3ubuntu0.6+esm4USN-8051-2

Fixed in:0.8.0~20170825.94fa1e38-1ubuntu0.7+esm6USN-8051-2

Fixed in:0.9.3-2ubuntu2.5+esm3USN-8051-2

Fixed in:0.9.6-2ubuntu0.22.04.6USN-8051-1

Fixed in:0.10.6-2ubuntu0.3USN-8051-1

Fixed in:0.11.2-1ubuntu0.2USN-8051-1

libssh-4Ubuntu

Fixed in:0.6.3-4.3ubuntu0.6+esm4USN-8051-2

Fixed in:0.8.0~20170825.94fa1e38-1ubuntu0.7+esm6USN-8051-2

Fixed in:0.9.3-2ubuntu2.5+esm3USN-8051-2

Fixed in:0.9.6-2ubuntu0.22.04.6USN-8051-1

Fixed in:0.10.6-2ubuntu0.3USN-8051-1

Fixed in:0.11.2-1ubuntu0.2USN-8051-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityHigh

Privileges RequiredLow

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityLow

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

Exploit Intelligence

0.22%probability of exploitation in 30 days

13thpercentile

Low risk: more likely to be exploited than 13% of all known CVEs.

References

Third-Party Advisory2

Release Notes1

libssh.org

Other references2

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-19.