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CVE-2026-53253
high
CVSS 7.1
Out-of-Bounds Read in c (CVE-2026-53253)
Summary
vulnerability in c (CVE-2026-53253). Risk of unauthorized operations or information disclosure.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-53253** has been found in c.
Risk of unauthorized operations or information disclosure. CVSS score: 7.1/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "c CVE-2026-53253" on the vendor's site.
CVE-2026-53253 (c) — CWE-125 / CVSS v3 7.1
Attack vector: adjacent-network / 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
**out-of-bounds read** (CWE-125) exists in c.
📍 Affected scope
c — .
🔥 Severity
Severity: High (CVSS 7.1/10). Risk of unauthorized operations or information disclosure
🔧 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-2026-53253
- web https://git.kernel.org/stable/c/0ef2ea86c82b2615902d085cd5a586fe9f58994f
- web https://git.kernel.org/stable/c/2b83afb19293e4de700edae306115f18966dc4f9
- web https://git.kernel.org/stable/c/6770d3a8acdf9151769180cc3710346c4cfbe6f0
- web https://git.kernel.org/stable/c/691f14b6a48b637655755134f1e551c7c6fedc2e
- web https://git.kernel.org/stable/c/be837cd09897e9e6e1958174501d467bdcbcc2bc
- web https://git.kernel.org/stable/c/c893e17d2809ec9c4b3f1cdd5847cecbc27a311b
- web https://git.kernel.org/stable/c/d76dec1a37122bc16d83d059c08c0512ea8de909
- web https://github.com/advisories/GHSA-p8x7-mcx2-j6w7