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CVE-2026-52986
critical
CVSS 9.8
Vulnerability in c (CVE-2026-52986)
Summary
vulnerability in c (CVE-2026-52986). Successful exploitation can lead to full system takeover.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-52986** has been found in c.
Successful exploitation can lead to full system takeover. CVSS score: 9.8/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "c CVE-2026-52986" on the vendor's site.
CVE-2026-52986 (c) — CVSS v3 9.8
Attack vector: remote (network-reachable) / unauthenticated / 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
**A vulnerability** (unclassified) exists in c.
📍 Affected scope
c — .
🔥 Severity
Severity: Critical (CVSS 9.8/10). 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://nvd.nist.gov/vuln/detail/CVE-2026-52986
- web https://git.kernel.org/stable/c/523762e3b6933fff81f01dfa3c60c0774044cdab
- web https://git.kernel.org/stable/c/7df9863bf538a626e8a684e59cb2c43eac0ef3c8
- web https://git.kernel.org/stable/c/8cd0358379570003659186706e077929d6930c40
- web https://git.kernel.org/stable/c/8cf6809cddcbe301aedfc6b51bcd4944d45795f6
- web https://git.kernel.org/stable/c/9c6afcb1c3cbb2c0da65b8515ac14d7273872f84
- web https://git.kernel.org/stable/c/9f69c323ae0ab517e595c2cc74e0ae0d9d085611
- web https://git.kernel.org/stable/c/b3264c977e79d8a25778d4fd11520f00fea1329c
- web https://git.kernel.org/stable/c/ea2ecd29b8f4433e52607192ca91084f95787ca0
- web https://github.com/advisories/GHSA-p6jx-f9x6-6955