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CVE-2026-34926
CISA KEV
medium
CVSS 6.7
[KEV] Vulnerability in Trend micro path-traversal (CVE-2026-34926)
Summary
vulnerability in Trend micro path-traversal (CVE-2026-34926). Confidential information can be exposed externally. Listed in CISA KEV — actively exploited.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-34926** has been found in Trend micro path-traversal.
Confidential information can be exposed externally. CVSS score: 6.7/10.
Note: CISA has officially confirmed this is **actively exploited in the wild**. Treat it with elevated urgency.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Trend micro path-traversal CVE-2026-34926" on the vendor's site.
CVE-2026-34926 (Trend micro path-traversal) — CWE-23 / CVSS v3 6.7
Attack vector: local / no user interaction
Listed in CISA KEV — actively exploited, treat as top priority.
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-23) exists in Trend micro path-traversal.
📍 Affected scope
Trend micro path-traversal — .
🔥 Severity
Severity: Medium (CVSS 6.7/10). Confidential information can be exposed externally **Listed in CISA KEV** — actively exploited in the wild, treat as top priority.
🔧 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 'path-traversal' .` 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 'path-traversal' . | 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 `path-traversal` 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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4Consider incident declaration escalate
Notify SOC / on-callCISA KEV登録済 = 実環境で悪用が観測されている。Step 3 で兆候があればインシデント対応宣言、無くてもパッチ適用までWAF強化を最優先で。
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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
- JVN JVNDB-2026-016802
- web [email protected]
- web https://success.trendmicro.com/en-US/solution/KA-0023430
- web https://success.trendmicro.com/ja-JP/solution/KA-0022974
- web https://www.jpcert.or.jp/english/at/2026/at260014.html
- web https://nvd.nist.gov/vuln/detail/CVE-2026-34926
- web https://jvn.jp/en/vu/JVNVU90583059
- web https://github.com/advisories/GHSA-4ccp-cqrh-3w9v
- web https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-34926