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CVE-2025-20337 is a critical improper-input-validation vulnerability in a Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) API. A remote unauthenticated attacker can submit a crafted API request that causes arbitrary code execution on the underlying operating system as root. The issue affects ISE and ISE-PIC 3.3 installations without Patch 7 and 3.4 installations without Patch 2.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No valid public exploits. Mallory filtered out 2 candidates as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
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.
109 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A previously exploited critical vulnerability affecting Cisco Identity Services Engine; no technical details are provided.
A critical unauthenticated remote code execution vulnerability in Cisco Identity Services Engine referenced for historical context; it was actively exploited in the wild.
Cisco Identity Services Engine (ISE/ISE-PIC) critical vulnerability allowing unauthenticated attackers to execute code as root on the underlying OS.
A max-severity vulnerability in Cisco ISE that was exploited as a zero-day to deploy custom malware.
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.