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CVE-2026-20186 is a critical command injection vulnerability in Cisco Identity Services Engine (ISE). The flaw is caused by insufficient validation of user-supplied input in the Cisco ISE web management interface, allowing crafted HTTP requests to reach the underlying operating system in an unsafe manner. An authenticated remote attacker with at least Read Only Admin privileges can exploit the issue to execute arbitrary commands on the affected device. Successful exploitation can provide initial user-level access on the underlying operating system and enable subsequent privilege escalation to root. In single-node ISE deployments, exploitation can also render the node unavailable.
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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 1 candidate 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.
16 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical Cisco ISE command execution vulnerability that allows attackers with read-only administrative access to execute arbitrary commands on affected systems.
Critical Cisco ISE vulnerability caused by insufficient validation of user input in HTTP requests, allowing an authenticated remote attacker with at least Read Only Admin privileges to gain OS access, escalate to root, execute commands, or cause node unavailability.
An input validation vulnerability in Cisco ISE that could allow attackers with read-only admin access to execute arbitrary OS commands via crafted HTTP requests.
A critical Cisco Identity Services Engine vulnerability that could allow a remote authenticated attacker with read-only admin rights to achieve remote code execution on the underlying operating system of an affected device.
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.