CVE-2025-27591

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.

CVSS v3 6.8 MEDIUM

6.8^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.5 / Impact : 4.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/facebookincubator/below/commit/da9382e6e3e332fd2c3195e22f34977f83f0f1f3	Patch
https://www.facebook.com/security/advisories/cve-2025-27591	Patch Vendor Advisory
http://www.openwall.com/lists/oss-security/2025/03/12/1	Exploit Mailing List

Configurations

Configuration 1 (hide)

cpe:2.3:a:facebook:below:*:*:*:*:*:rust:*:*

History

No history.

Information

Published : 2025-03-11 19:15

Updated : 2025-07-03 14:40

NVD link : CVE-2025-27591

Mitre link : CVE-2025-27591

CVE.ORG link : CVE-2025-27591

JSON object : View

Products Affected

facebook

below

CWE

CWE-732

Incorrect Permission Assignment for Critical Resource

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