CVE catalog

CVE-2026-4751

NULL Pointer Dereference vulnerability in tmate-io tmate.This issue affects tmate: before 2.4.0.

[CVE catalog]

Severity
Medium · CVSS 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Published
Source
[NVD] · [CVE record]
EPSS
0.33% · Oct 25, 2026

NULL Pointer Dereference vulnerability in tmate-io tmate.This issue affects tmate: before 2.4.0.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

DistributionPackageReleaseVersionStatus
Debiantmatesid2.4.0-4vulnerable
Debiantmateforky2.4.0-4vulnerable
Debiantmatetrixie2.4.0-3vulnerable
Debiantmatebookworm2.4.0-2vulnerable
CpetmateNot reportedNot reportedvulnerable

Fixed-version evidence

DistributionPackageTypeReleaseFixed versionUrgencyOriginBugs
Debiantmatesourcesid(unfixed)unimportantNot reported[1132019]
Debiantmatesourceforky(unfixed)unimportantNot reported[1132019]
Debiantmatesourcetrixie(unfixed)unimportantNot reported[1132019]
Debiantmatesourcebookworm(unfixed)unimportantNot reported[1132019]

[Debian bug #1132019]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

  • [tmate]Affected
    Details (2)

    • 2.4.0-2 · amd64 · bookworm

      Affected

      nvd · tmate · debian · bookworm; nvd · tmate · debian · 12

    • 2.4.0-2 · arm64 · bookworm

      Affected

      nvd · tmate · debian · bookworm; nvd · tmate · debian · 12

[Debian 13 (Trixie)]

  • [tmate]Affected

    Source package: [tmate]

    Details (2)

    • 2.4.0-3 · amd64 · trixie

      Affected

      nvd · tmate · debian · 13

    • 2.4.0-3+b1 · arm64 · trixie

      Affected

      nvd · tmate · debian · 13

Observed:

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]