CVE-2026-4046
glibcVulnerabilityCVSS 7.5PatchedPoC
A public proof-of-concept or exploit code is available, raising the risk of active exploitation. A fixed version is available (see the table below).
Recommended action: Update to the fixed version listed for your distribution using the native package manager.
Severity metrics
CVSS 3.1 : 7.5 HIGH
Attack vectorNetwork (remote)
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected & fixed versions by distribution
Versions are the native distribution strings (backport-aware): RHEL/Debian/SUSE backport fixes, so compare with the distro version comparator (dpkg / rpm / vercmp), not the upstream version.
| Distribution | Package | Affected | Fixed version | Status |
|---|---|---|---|---|
| Debian:11 | glibc | - | 2.31-13+deb11u14 | fixed |
| Debian:12 | glibc | - | 2.36-9+deb12u14 | fixed |
| Debian:13 | glibc | - | 2.41-12+deb13u3 | fixed |
| Debian:14 | glibc | - | 2.42-15 | fixed |
| Ubuntu:Pro:16.04:LTS | glibc | - | - | affected (no fix yet) |
| Ubuntu:Pro:18.04:LTS | glibc | - | - | affected (no fix yet) |
| Ubuntu:Pro:20.04:LTS | glibc | - | - | affected (no fix yet) |
| Ubuntu:22.04:LTS | glibc | - | - | affected (no fix yet) |
| Ubuntu:24.04:LTS | glibc | - | - | affected (no fix yet) |
| Ubuntu:25.10 | glibc | - | - | affected (no fix yet) |
| Ubuntu:26.04:LTS | glibc | - | - | affected (no fix yet) |
| SUSE:Linux Micro Extras 6.2 | glibc | - | 2.40-160000.5.1 | fixed |
| SUSE:Linux Enterprise Micro 5.3 | glibc | - | 2.31-150300.101.1 | fixed |
| SUSE:Linux Enterprise Micro 5.4 | glibc | - | 2.31-150300.101.1 | fixed |
| SUSE:Linux Enterprise Micro 5.5 | glibc | - | 2.31-150300.101.1 | fixed |
| SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | glibc | - | 2.31-150300.101.1 | fixed |
| SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS | glibc | - | 2.31-150300.101.1 | fixed |
| SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | glibc | - | 2.31-150300.101.1 | fixed |
| SUSE:Linux Enterprise High Performance Computing 15 SP5-LTSS | glibc | - | 2.31-150300.101.1 | fixed |
| SUSE:Linux Enterprise Server 15 SP4-LTSS | glibc | - | 2.31-150300.101.1 | fixed |
| SUSE:Linux Enterprise Server 15 SP5-LTSS | glibc | - | 2.31-150300.101.1 | fixed |
| SUSE:Linux Enterprise Server for SAP Applications 15 SP4 | glibc | - | 2.31-150300.101.1 | fixed |
| SUSE:Linux Enterprise Server for SAP Applications 15 SP5 | glibc | - | 2.31-150300.101.1 | fixed |
| SUSE:Linux Enterprise Server 12 SP5-LTSS | glibc | - | 2.22-114.46.1 | fixed |
| SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5 | glibc | - | 2.22-114.46.1 | fixed |
| SUSE:Linux Enterprise Server 11 SP4 LTSS EXTREME CORE | glibc | - | 2.11.3-17.110.55.1 | fixed |
| openSUSE:Tumbleweed | glibc | - | 2.43-2.1 | fixed |
| Red Hat:hummingbird:1 | glibc | - | 0:2.42-12.hum1 | fixed |
| Red Hat:enterprise_linux:8::baseos | glibc | - | 0:2.28-251.el8_10.37 | fixed |
| Red Hat:enterprise_linux:10.2 | glibc | - | 0:2.39-124.el10_2 | fixed |
| Red Hat:enterprise_linux:9::baseos | glibc | - | 0:2.34-270.el9_8 | fixed |