CVE-2021-31523

7.8 highEPSS 0.3%

High (7.8) in xscreensaver project xscreensaver. EPSS 0.3% chance of exploitation in the next 30 days.

The Debian xscreensaver 5.42+dfsg1-1 package for XScreenSaver has cap_net_raw enabled for the /usr/libexec/xscreensaver/sonar file, which allows local users to gain privileges because this is arguably incompatible with the design of the Mesa 3D Graphics library dependency.

Severity

CVSS 3.1

7.8 high

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

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 24% of CVEs (scores of 2026-10-31)
CWE: CWE-269
Published: 2021-04-21
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

xscreensaver_project:xscreensaver

References

http://www.openwall.com/lists/oss-security/2021/04/21/3
https://www.openwall.com/lists/oss-security/2021/04/17/1
http://www.openwall.com/lists/oss-security/2021/04/21/3
https://www.openwall.com/lists/oss-security/2021/04/17/1

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