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CVE-2025-20156 is a critical authorization flaw in the REST API of Cisco Meeting Management. The vulnerability is caused by improper enforcement of authorization for REST API users, allowing an authenticated remote attacker with low privileges to access a specific API endpoint in a way that bypasses intended privilege restrictions. By sending crafted API requests to the affected endpoint, an attacker can elevate privileges to administrator. Successful exploitation can result in administrator-level control over edge nodes managed by Cisco Meeting Management.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Critical privilege escalation vulnerability in Cisco Meeting Management REST API allowing authenticated attackers to gain administrator privileges.
Critical privilege escalation vulnerability in Cisco Meeting Management caused by insufficient authorization validation in the REST API, allowing an authenticated remote attacker to gain administrator privileges and full control over managed nodes.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.