CVE search · CVE-2025-27591

CVE-2025-27591

medium 6.8

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.

Open in the NVD CVE.org JSON

Status: Analyzed
Published: 2025-03-11
Last changed: 2026-06-17
Source: cve-assign@fb.com
Weakness: CWE-732

Severity

Version	Score	Vector	Source
CVSS 3.1	medium 6.8	`CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N`	134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary

Affected products

Vendor and product from the NVD’s CPE applicability statements. Versions and conditions are on the NVD’s page.

facebook · below

References

https://github.com/facebookincubator/below/commit/da9382e6e3e332fd2c3195e22f34977f83f0f1f3Patch
https://www.facebook.com/security/advisories/cve-2025-27591PatchVendor Advisory
http://www.openwall.com/lists/oss-security/2025/03/12/1ExploitMailing List

CVE-2025-27591

Details

Severity

Affected products

References