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CVE-2026-20045 — AI Deep Analysis Summary

CVSS 8.2 · High

Q1What is this vulnerability? (Essence + Consequences)

🚨 **Essence**: A critical Remote Code Execution (RCE) flaw in Cisco Unified CM products. <br>🔥 **Consequences**: Attackers can execute arbitrary commands and escalate privileges to **root** level.…

Q2Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: **CWE-94** (Code Injection). <br>❌ **Flaw**: Inadequate validation of user input within **HTTP requests**. The system fails to sanitize inputs, allowing malicious code injection.

Q3Who is affected? (Versions/Components)

🏢 **Affected Vendor**: **Cisco**. <br>📦 **Products**: Cisco Unified Communications Manager, Cisco Unified CM SME, Cisco Unified CM IM&P. (Specific versions not listed in data, but all listed products are impacted).

Q4What can hackers do? (Privileges/Data)

💀 **Attacker Capabilities**: <br>1️⃣ Execute **arbitrary commands** remotely. <br>2️⃣ Escalate privileges to **root**. <br>3️⃣ Full control over the affected server components.

Q5Is exploitation threshold high? (Auth/Config)

⚡ **Exploitation Threshold**: **LOW**. <br>🌐 **Network**: Attack Vector is **Network (AV:N)**. <br>🔓 **Auth**: No Privileges required (**PR:N**). <br>👀 **UI**: No User Interaction needed (**UI:N**).…

Q6Is there a public Exp? (PoC/Wild Exploitation)

🔓 **Public Exploits**: **YES**. <br>🔗 **PoCs Available**: <br>- [Ashwesker-CVE-2026-20045](https://github.com/dkstar11q/Ashwesker-CVE-2026-20045) <br>- [CVE-2026-20045](https://github.com/zaryouhashraf/CVE-2026-20045).…

Q7How to self-check? (Features/Scanning)

🔍 **Self-Check**: <br>1️⃣ Scan for Cisco Unified CM services. <br>2️⃣ Check for HTTP request injection points. <br>3️⃣ Use the provided GitHub PoCs for verification (in isolated env).…

Q8Is it fixed officially? (Patch/Mitigation)

🩹 **Official Fix**: **YES**. <br>📄 **Advisory**: Cisco Security Advisory **cisco-sa-voice-rce-mORhqY4b**. <br>📅 **Published**: 2026-01-21. <br>✅ Action: Apply the official patch immediately.

Q9What if no patch? (Workaround)

🚧 **No Patch Workaround**: <br>1️⃣ **Block Access**: Restrict HTTP access to CM components via Firewall/ACL. <br>2️⃣ **Input Sanitization**: If possible, implement WAF rules to block injection patterns.…

Q10Is it urgent? (Priority Suggestion)

🔴 **Urgency**: **CRITICAL**. <br>📈 **CVSS**: High severity (Full Confidentiality, Integrity impact, Root Access). <br>⏳ **Priority**: **IMMEDIATE PATCHING** required. Public exploits exist, and no auth is needed.…