← Back
CVE-2025-39812
medium
CVSS 5.5
Vulnerability in c (CVE-2025-39812)
Summary
vulnerability in c (CVE-2025-39812). Risk of unauthorized operations or information disclosure.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2025-39812** has been found in c.
Risk of unauthorized operations or information disclosure. CVSS score: 5.5/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "c CVE-2025-39812" on the vendor's site.
CVE-2025-39812 (c) — CWE-908 / CVSS v3 5.5
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
**A vulnerability** (CWE-908) exists in c.
📍 Affected scope
c — .
🔥 Severity
Severity: Medium (CVSS 5.5/10). 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
-
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。
-
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/17d6c7747045e9b802c2f5dfaba260d309d831ae
- web https://git.kernel.org/stable/c/1bbc0c02aea1f1c405bd1271466889c25a1fe01b
- web https://git.kernel.org/stable/c/2e8750469242cad8f01f320131fd5a6f540dbb99
- web https://git.kernel.org/stable/c/45e4b36593edffb7bbee5828ae820bc10a9fa0f3
- web https://git.kernel.org/stable/c/463aa96fca6209bb205f49f7deea3817d7ddaa3a
- web https://git.kernel.org/stable/c/65b4693d8bab5370cfcb44a275b4d8dcb06e56bf
- web https://git.kernel.org/stable/c/9546934c2054bba1bd605c44e936619159a34027
- web https://git.kernel.org/stable/c/f6c2cc99fc2387ba6499facd6108f6543382792d
- web https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
- web https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
- web https://cert-portal.siemens.com/productcert/html/ssa-032379.html
- web https://nvd.nist.gov/vuln/detail/CVE-2025-39812
- web https://github.com/advisories/GHSA-39p8-x6c9-fprr