CVE-2021-40084
CRITICAL
9.8
CVSS Score
Published: August 25, 2021 at 12:21 AM UTC
Updated: June 17, 2026 at 04:06 AM UTC
1 product affected across 1 vendorOpensysusers
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Severity
CRITICAL9.8
Exploit prediction
EPSS 3%
Description
opensysusers through 0.6 does not safely use eval on files in sysusers.d that may contain shell metacharacters. For example, it allows command execution via a crafted GECOS field whereas systemd-sysusers (a program with the same specification) does not do that.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v ≤ 0.6
Remediation
No guide yetNo remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.
References (2)
x_refsource_MISCExploitMailing ListThird Party Advisory
Source: [email protected]
https://bugs.debian.org/992058x_refsource_MISCRelease NotesThird Party Advisory
Source: [email protected]
https://github.com/artix-linux/opensysusers/releasesCVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-94
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