CVE-2026-42535
apache2VulnerabilityCVSS 9.1Patched
No public exploitation has been reported so far. 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 : 9.1 CRITICAL
Attack vectorNetwork (remote)
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
Confidentiality impactNone
Integrity impactHigh
Availability impactHigh
Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/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 | apache2 | - | 2.4.67-1~deb11u3 | fixed |
| Debian:12 | apache2 | - | 2.4.68-1~deb12u1 | fixed |
| Debian:13 | apache2 | - | 2.4.68-1~deb13u1 | fixed |
| Debian:14 | apache2 | - | 2.4.68-1 | fixed |
| Ubuntu:Pro:14.04:LTS | apache2 | - | 2.4.7-1ubuntu4.22+esm14 | fixed |
| Ubuntu:Pro:16.04:LTS | apache2 | - | 2.4.18-2ubuntu3.17+esm19 | fixed |
| Ubuntu:Pro:18.04:LTS | apache2 | - | 2.4.29-1ubuntu4.27+esm10 | fixed |
| Ubuntu:Pro:20.04:LTS | apache2 | - | 2.4.41-4ubuntu3.23+esm5 | fixed |
| Ubuntu:22.04:LTS | apache2 | - | 2.4.52-1ubuntu4.23 | fixed |
| Ubuntu:24.04:LTS | apache2 | - | 2.4.58-1ubuntu8.15 | fixed |
| Ubuntu:25.10 | apache2 | - | - | affected (no fix yet) |
| Ubuntu:26.04:LTS | apache2 | - | 2.4.66-2ubuntu2.4 | fixed |
| SUSE:Linux Enterprise Server 16.0 | apache2 | - | 2.4.66-160000.3.1 | fixed |
| SUSE:Linux Enterprise Server for SAP applications 16.0 | apache2 | - | 2.4.66-160000.3.1 | fixed |
| SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | apache2 | - | 2.4.66-150400.6.57.1 | fixed |
| SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS | apache2 | - | 2.4.66-150400.6.57.1 | fixed |
| SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | apache2 | - | 2.4.66-150400.6.57.1 | fixed |
| SUSE:Linux Enterprise High Performance Computing 15 SP5-LTSS | apache2 | - | 2.4.66-150400.6.57.1 | fixed |
| SUSE:Linux Enterprise Server 15 SP4-LTSS | apache2 | - | 2.4.66-150400.6.57.1 | fixed |
| SUSE:Linux Enterprise Server 15 SP5-LTSS | apache2 | - | 2.4.66-150400.6.57.1 | fixed |
| SUSE:Linux Enterprise Server for SAP Applications 15 SP4 | apache2 | - | 2.4.66-150400.6.57.1 | fixed |
| SUSE:Linux Enterprise Server for SAP Applications 15 SP5 | apache2 | - | 2.4.66-150400.6.57.1 | fixed |
| SUSE:Linux Enterprise Server 12 SP5-LTSS | apache2 | - | 2.4.66-35.81.1 | fixed |
| SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5 | apache2 | - | 2.4.66-35.81.1 | fixed |
| SUSE:Linux Enterprise Server 15 SP6-LTSS | apache2 | - | 2.4.66-150600.5.55.1 | fixed |
| SUSE:Linux Enterprise Server for SAP Applications 15 SP6 | apache2 | - | 2.4.66-150600.5.55.1 | fixed |
| SUSE:Linux Enterprise Module for Basesystem 15 SP7 | apache2 | - | 2.4.66-150700.4.23.1 | fixed |
| openSUSE:Leap 16.0 | apache2 | - | 2.4.66-160000.3.1 | fixed |
| Red Hat:hummingbird:1 | httpd | - | 0:2.4.68-1.hum1 | fixed |
| Red Hat:enterprise_linux:10.2 | httpd | - | 0:2.4.63-13.el10_2.4 | fixed |
| Red Hat:enterprise_linux:9::appstream | httpd | - | 0:2.4.62-13.el9_8.5 | fixed |