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CVE-2026-64188
high
CVSS 7.8
Use-After-Free in c (CVE-2026-64188)
Summary
vulnerability in c (CVE-2026-64188). Successful exploitation can lead to full system takeover.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-64188** has been found in c.
Successful exploitation can lead to full system takeover. CVSS score: 7.8/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "c CVE-2026-64188" on the vendor's site.
CVE-2026-64188 (c) — CWE-416 / CVSS v3 7.8
Attack vector: local / no user interaction
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
❓ What is the problem
**use-after-free** (CWE-416) exists in c.
📍 Affected scope
c — .
🔥 Severity
Severity: High (CVSS 7.8/10). Successful exploitation can lead to full system takeover
🔧 How to fix
Update to the patched release per vendor advisory.
🛡️ Workaround
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
🔍 Detection
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run `grep -r 'c' .` against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response Actions (7 steps)
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r 'c' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で `c` を grep し、稼働しているサービス・バージョンを把握する。
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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://git.kernel.org/stable/c/1078ae8175777e80c9637996fb4a46c55f0ce576
- web https://git.kernel.org/stable/c/310b93246bfec7d4452507e0c15477377ed9f025
- web https://git.kernel.org/stable/c/41e06fcc5df0774d212e70c5b503fc769492bce3
- web https://git.kernel.org/stable/c/8b17adf6d4fb6bf61fa4c3f58366a7c082799a71
- web https://git.kernel.org/stable/c/9918698cf3aee4032e12bb42fd5a951dc465339b
- web https://git.kernel.org/stable/c/c4e676c3505c5058922dc1a6f1ded795f6758135
- web https://git.kernel.org/stable/c/d00c953a8f69921f484b629801766da68f27f658
- web https://git.kernel.org/stable/c/f193e38cb257d033060b63f1cfd94af076b3a2ab
- web https://nvd.nist.gov/vuln/detail/CVE-2026-64188
- web https://github.com/advisories/GHSA-6h7j-8h9r-mwrg