Privilege Escalation Vulnerability in Below Service by Facebook
CVE-2025-27591
6.8MEDIUM
Key Information:
- Vendor
Meta Platforms, Inc
- Status
- Vendor
- CVE Published:
- 11 March 2025
Badges
👾 Exploit Exists🟡 Public PoC
What is CVE-2025-27591?
A privilege escalation vulnerability was identified in the Below service prior to version 0.9.0. This vulnerability arises from the creation of a world-writable directory located at /var/log/below. As a result, local unprivileged users can exploit this flaw through symlink attacks, potentially manipulating sensitive files, including /etc/shadow, to gain unauthorized root privileges. It is crucial for users to upgrade to the latest version to mitigate the associated risks.
Affected Version(s)
below 0.0.0 < 0.9.0
Exploit Proof of Concept (PoC)
PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.