Vulnerability in KDDI CORPORATION あんしんフィルター for au (CVE-2026-41281)
Summary
Vulnerability in KDDI CORPORATION あんしんフィルター for au (CVE-2026-41281). Risk of unauthorized operations or information disclosure.
Original description
The description as published by the source.
Android App "あんしんフィルター for au" provided by KDDI CORPORATION contains Cleartext Transmission of Sensitive Information (CWE-319) vulnerability. A man-in-the-middle attacker may access and modify communications transmitted in plaintext, potentially resulting in information disclosure or data tampering.
Source: JVN (Japan Vulnerability Notes) NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-41281 has been found in KDDI CORPORATION あんしんフィルター for au.
Risk of unauthorized operations or information disclosure. CVSS score: 4.8/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "KDDI CORPORATION あんしんフィルター for au CVE-2026-41281" on the vendor's site.
CVE-2026-41281 (KDDI CORPORATION あんしんフィルター for au) — CWE-319 / CVSS v3 4.8
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.
A vulnerability (CWE-319) exists in KDDI CORPORATION あんしんフィルター for au.
Check the vendor advisory for the affected versions of KDDI CORPORATION あんしんフィルター for au.
Severity: Medium (CVSS 4.8/10). Risk of unauthorized operations or information disclosure.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで KDDI CORPORATION あんしんフィルター for au を使っているサービスとバージョンを洗い出す。
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2Post-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。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
References
- JVN JVNDB-2026-000069
- web nvd.nist.gov
- web jvn.jp
- web github.com
- web vultures@jpcert.or.jp