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CVE-2025-39683
high
CVSS 7.1
Out-of-Bounds Read in c (CVE-2025-39683)
Summary
vulnerability in c (CVE-2025-39683). Confidential information can be exposed externally.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2025-39683** has been found in c.
Confidential information can be exposed externally. 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-2025-39683" on the vendor's site.
CVE-2025-39683 (c) — CWE-125 / CVSS v3 7.1
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
**out-of-bounds read** (CWE-125) exists in c.
📍 Affected scope
c — .
🔥 Severity
Severity: High (CVSS 7.1/10). Confidential information can be exposed externally
🔧 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://git.kernel.org/stable/c/3079517a5ba80901fe828a06998da64b9b8749be
- web https://git.kernel.org/stable/c/418b448e1d7470da9d4d4797f71782595ee69c49
- web https://git.kernel.org/stable/c/41b838420457802f21918df66764b6fbf829d330
- web https://git.kernel.org/stable/c/58ff8064cb4c7eddac4da1a59da039ead586950a
- web https://git.kernel.org/stable/c/6a909ea83f226803ea0e718f6e88613df9234d58
- web https://git.kernel.org/stable/c/b842ef39c2ad6156c13afdec25ecc6792a9b67b9
- web https://git.kernel.org/stable/c/d0c68045b8b0f3737ed7bd6b8c83b7887014adee
- 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://cert-portal.siemens.com/productcert/html/ssa-082556.html
- web https://nvd.nist.gov/vuln/detail/CVE-2025-39683
- web https://github.com/advisories/GHSA-jvqc-385v-69q8