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8.6CRITICAL

A Vulnerability in Cisco Products Could Allow for Server-Side Request Forgery

📅 5 June 2026 at 13:13 UTC📰 CIS AdvisoriesView original source ↗

A vulnerability has been discovered in Cisco products that could allow for Server-Side Request Forgery. Cisco Unified Communications Manager (Unified CM) / Cisco Unified Communications Manager Session Management Edition (Unified CM SME) is Cisco’s central, software-based call control and session management platform for enterprise communication.Successful exploitation of this vulnerability could allow for Server-Side Request Forgery, where an attacker could write files to the underlying operating system that could be used later to elevate to root. Depending on the location the attacker is able to write files to, they may be able to execute commands or remotely access the affected device.

🤖 AI BriefingAuto-generated threat analysis
🔍Threat Overview

A vulnerability in Cisco Unified Communications Manager (Unified CM) and Session Management Edition (Unified CM SME) allows for Server-Side Request Forgery, potentially leading to elevated privileges and remote access. The vulnerability is currently unexploited but proof of concept code exists publicly.

⚙️Technical Details
CVEs
CVE-2026-20230
Affected Systems
Cisco Unified Communications ManagerCisco Unified Communications Manager Session Management Edition
Attack Vectors
NETWORK
💥Impact Assessment
Severity: MEDIUM
🛡️Recommended Actions
1Apply appropriate updates provided by Cisco or other vendors to vulnerable systems immediately after testing.
2Establish and maintain a documented vulnerability management process for enterprise assets.
3Perform automated vulnerability scans of internal enterprise assets on a quarterly, or more frequent, basis.
📦Affected Products
Cisco Unified Communications ManagerCisco Unified Communications Manager Session Management Edition
🔐NVD Verified DataVERIFIED
CVE-2026-20230CVSS 8.6HIGH
Attack Vector
NETWORK
Complexity
LOW
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
Weaknesses
CWE-918

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