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CVE-2026-8094
critical
CVSS 9.8
Code Injection in firefox (CVE-2026-8094)
Summary
code injection in firefox (CVE-2026-8094). Successful exploitation can lead to full system takeover.
AI summary openai / gpt-4o
A critical vulnerability has been identified in Firefox's WebRTC component that could allow attackers to execute malicious code without any special actions. This has been resolved in the latest Firefox ESR 140.10.2, and prompt updating is advised. Similar issues in the past have led to data breaches.
CVE-2026-8094 is a vulnerability in Firefox's WebRTC component where improper control of code generation may allow remote, network-based arbitrary code execution. While specific affected versions are unspecified, it has been patched in Firefox ESR 140.10.2. No workarounds are provided; applying the latest patches is critical.
❓ What is the problem
Improper Control of Generation of Code ('Code Injection') in WebRTC component of Firefox.
📍 Affected scope
Firefox WebRTC component; specific function or endpoint not detailed
🔥 Severity
Critical severity with CVSS 9.8, allowing for remote code execution without user interaction.
🔧 How to fix
Update to Firefox ESR 140.10.2 or later.
🛡️ Workaround
No workaround provided.
🔍 Detection
No specific detection method provided.
Related past incidents Similar incidents extracted from past CVEs
Similar in criticality and impact to OpenSSL's flaw allowing memory exposure and data leak.
A similar arbitrary code execution issue in a web component.
A recent critical exploit in similar environment, reflective of its high risk nature.
If this happens at your company Expected impact per business scenario
📌 Online media services reliant on WebRTC for video communications
Unauthorized code execution leading to data theft and service disruption.
📌 Corporate environments using integrated Firefox ESR for secure browsing
Potential breach of sensitive corporate information if exploited.
📌 Web development agencies relying on WebRTC functionalities
Code integrity and confidentiality compromises affecting client projects.
Recommended action
Promptly update all Firefox ESR installations to version 140.10.2 or later to mitigate the vulnerability risk.
Response Actions (7 steps)
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
Audit SBOM/dependencies for affected components.依存マニフェストで影響コンポーネントを特定する。
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7Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番では Step 3 と同じログクエリでアラート再発が無いか継続監視。
References
- web https://bugzilla.mozilla.org/show_bug.cgi?id=2035939
- web [email protected]
- web [email protected]
- web https://nvd.nist.gov/vuln/detail/CVE-2026-8094
- web https://www.mozilla.org/security/advisories/mfsa2026-41
- web https://www.mozilla.org/security/advisories/mfsa2026-44
- web https://github.com/advisories/GHSA-5ghx-9783-29rc