CVE-2021-3997

MEDIUM
MEDIUM Priority: 0.10 BB Relevance: 36/100
Published: 2022-08-23 Modified: 2026-11-02 First seen: 2026-11-02 Status: active

Attack Surface

Low Complexity No Interaction

CVSS Vector Breakdown

AV: Local
AC: Low
PR: Low
UI: None
S: Unchanged
C: None
I: None
A: High

Description

A flaw was found in systemd. An uncontrolled recursion in systemd-tmpfiles may lead to a denial of service at boot time when too many nested directories are created in /tmp.

Affected Software (7)

Bug Bounty Relevance

36 / 100
✓ Low complexity
✓ No user interaction

CVSS Score

5.5 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

1.74%
Raw Score 0.017350
Percentile 77.7%
Date 2026-11-04

EPSS Trend

2026-11-04
0.01735
2026-11-03
0.01735
2026-11-02
0.01735

Intelligence Sources

mitre ref →
nvd ref →