CVE-2025-27591

State: Published
Severity: 6.8 Medium
Published: Mar 11, 2025
Updated: Mar 21, 2025
Reserved: Mar 3, 2025

Description

A privilege escalation vulnerability existed in the Below service prior to v0.9.0 due to the creation of a world-writable directory at /var/log/below. This could have allowed local unprivileged users to escalate to root privileges through symlink attacks that manipulate files such as /etc/shadow.

Scores

CVSS	Score	Vector	Source
3.1	6.8 Medium	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N	CISA-ADP

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
belowMeta Platforms, Inc	0.0.0 to before 0.9.0Affected

References

https://www.facebook.com/security/advisories/cve-2025-27591
https://github.com/facebookincubator/below/commit/da9382e6e3e332fd2c3195e22f34977f83f0f1f3
http://www.openwall.com/lists/oss-security/2025/03/12/1

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