What’s Vulnerable › Vulnerabilities

CVE-2021-40084

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-08-25 · updated 2026-06-17
• Weakness: CWE-94

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 products

• Artixlinux Opensysusers: through 0.6

References

• https://bugs.debian.org/992058
• https://github.com/artix-linux/opensysusers/releases
• https://bugs.debian.org/992058
• https://github.com/artix-linux/opensysusers/releases

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