TLDR InfoSec · ATTACKS & VULNERABILITIES
UPDATE FIREFOX TO PATCH CVE-2025-13016 VULNERABILITY AFFECTING 180 MILLION USERS
Summary from the TLDR InfoSec newsletter
A critical memory vulnerability in Firefox's WebAssembly (Wasm) engine, tracked as CVE-2025-13016, exposed 180 million users to remote code execution risks for six months. The flaw involved a stack buffer overflow within the Garbage Collection mechanism caused by an incorrect memory pointer calculation, allowing attackers to hijack program flow via malicious webpages. Security professionals should ensure all instances of Firefox are updated to version 145 or ESR 140.5 immediately to mitigate this high-severity risk.