CVE-2023-26604 Privilege escalation in n/a

What is CVE-2023-26604?

CVE-2023-26604 is a high-severity vulnerability in Debian Debian Linux, published on 3 Mar 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

systemd before 247 does not adequately block local privilege escalation for some Sudo configurations, e.g., plausible sudoers files in which the "systemctl status" command may be executed. Specifically, systemd does not set LESSSECURE to 1, and thus other programs may be launched from the less program. This presents a substantial security risk when running systemctl from Sudo, because less executes as root when the terminal size is too small to show the complete systemctl output.

Weakness: CWE-269

Which versions are affected by CVE-2023-26604?

It affects 2 products.

Products include Debian Debian Linux, Systemd Project Systemd.

How do I fix CVE-2023-26604?

Upgrade to a fixed version.

Is CVE-2023-26604 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-26604 exists.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as ALSA-2023:3837, CLSA-2023-1679350239, CLSA-2023-1679350567, CLSA-2023-1688678794, CLSA-2023-1698690423, CLSA-2024-1711562715 and 11 more.