Critical Use‑After‑Free in Mozilla Firefox (CVE‑2022‑26486) Threatens Browser Execution
What It Is
Mozilla Firefox’s WebGPU IPC framework contains a use‑after‑free flaw that can be triggered by crafted web content. When exploited, the bug allows an attacker to execute arbitrary native code within the context of the browser process.
Exploitability
The vulnerability is classified as Critical (CVSS 9.8). Public proof‑of‑concept code has been released, and security researchers have demonstrated remote code execution via malicious web pages. No evidence of widespread active exploitation has been disclosed, but the availability of a PoC raises the risk profile.
Affected Products
- Mozilla Firefox (all supported desktop versions at the time of disclosure)
Why It Matters for Compliance & Audit Readiness
Control‑based frameworks (e.g., NIST CSF, ISO 27001) require continuous monitoring of software vulnerabilities and evidence of timely remediation. An unpatched use‑after‑free in a widely used browser undermines Asset Management and Vulnerability Management controls, exposing organizations to audit findings for insufficient due‑diligence. Demonstrating that the Firefox version inventory is tracked, patches are applied within the vendor‑defined window, and remediation evidence is retained satisfies both internal governance and external regulator expectations.
Recommended Actions
- Verify the current Firefox version across all endpoints and compare against the vendor’s patched release (≥ 102.5.1).
- Deploy the update through centralized patch‑management tools; document the rollout date and affected asset list for audit trails.
- Enable browser hardening settings (e.g., disable WebGPU if not required) as a temporary mitigation while patching.
- Record the remediation steps in your vulnerability‑management system to provide defensible evidence for auditors.
Source: https://nvd.nist.gov/vuln/detail/CVE-2022-26486