Vulnerability in microsoft (CVE-2025-53782, CVSS 8.4)

Summary

vulnerability in microsoft (CVE-2025-53782). Successful exploitation can lead to full system takeover.

Original description

The description as published by the source.

Incorrect implementation of authentication algorithm in Microsoft Exchange Server allows an unauthorized attacker to elevate privileges locally.

Source: NIST National Vulnerability Database NVD

AI summary

Written by an external AI model and may contain mistakes. Check the original description and references below before acting on it.

A vulnerability tracked as CVE-2025-53782 has been found in microsoft.
Successful exploitation can lead to full system takeover. CVSS score: 8.4/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "microsoft CVE-2025-53782" on the vendor's site.

CVE-2025-53782 (microsoft) — CWE-303 / CVSS v3 8.4
Attack vector: local / 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

Microsoft Exchange Serverでの認証アルゴリズムの誤実装。

📍 Affected scope

Microsoft Exchange Server全てのバージョン。

🔥 Severity

権限昇格を可能にし、重大なセキュリティリスクを引き起こします。

🔧 How to fix

Microsoftの提供するパッチを適用してください。

🛡️ Workaround

情報なし

🔍 Detection

情報なし

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

1
Identify exposure identify
```
grep -r 'microsoft' . | 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 microsoft を grep し、稼働しているサービス・バージョンを把握する。
7
Post-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

patch secure@microsoft.com