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CVE-2026-53176
critical
CVSS 9.8
Vulnerability in c (CVE-2026-53176)
Summary
vulnerability in c (CVE-2026-53176). Successful exploitation can lead to full system takeover.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-53176** 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-2026-53176" on the vendor's site.
CVE-2026-53176 (c) — CWE-191 / 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** (CWE-191) 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
-
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-2026-53176
- web https://git.kernel.org/stable/c/1ca40b243277c9e88be5e00bd3e083f71aefb93e
- web https://git.kernel.org/stable/c/29e7b925ae6df64894e82ab6419994dc25580a8a
- web https://git.kernel.org/stable/c/75ee6e4aa096aa9e7b2dd5c8ff98356e30aceefb
- web https://git.kernel.org/stable/c/bd22740d7f14cb1c0289444cfd2c8d2938667c1d
- web https://git.kernel.org/stable/c/c1234229399f4af12c553b1b0ffd978eeba65548
- web https://git.kernel.org/stable/c/c5584e089b5af7b3bf8bd5e8ca0560cbf32b0a47
- web https://git.kernel.org/stable/c/df422fd273c96c2ee5beb80fc21adc8c70c29260
- web https://git.kernel.org/stable/c/e8a013c0c3ca2f6708341a56612a3f6d6921620a
- web https://github.com/advisories/GHSA-cm56-mvx6-66qm
- web https://access.redhat.com/security/cve/CVE-2026-53176
- web https://bugzilla.redhat.com/show_bug.cgi?id=2492741
- web https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53176.json