CVE-2020-16127

5.5 mediumEPSS 0.4%

Medium (5.5) in freedesktop accountsservice. EPSS 0.4% chance of exploitation in the next 30 days.

An Ubuntu-specific modification to AccountsService in versions before 0.6.55-0ubuntu13.2, among other earlier versions, would perform unbounded read operations on user-controlled ~/.pam_environment files, allowing an infinite loop if /dev/zero is symlinked to this location.

Severity

CVSS 3.1

5.5 medium

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

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 35% of CVEs (scores of 2026-10-31)
CWEs: CWE-835, CWE-20
Published: 2020-11-11
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

freedesktop:accountsservice

References

https://securitylab.github.com/advisories/GHSL-2020-187-accountsservice-drop-privs-DOS
https://securitylab.github.com/advisories/GHSL-2020-187-accountsservice-drop-privs-DOS

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