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CVE-2026-20181 is a critical authenticated remote code execution vulnerability affecting Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC). The flaw is caused by insufficient validation of user-supplied input in HTTP request handling, allowing a remote attacker with valid administrative credentials to send crafted HTTP requests that result in arbitrary command execution on the underlying operating system. Successful exploitation can provide user-level operating system access, after which the attacker may further elevate privileges to root. In single-node deployments, exploitation can also render the affected node unavailable.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
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.
33 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Cisco Identity Services Engine vulnerability described as a remote code execution issue affecting Cisco Identity Services Engine.
A critical command execution vulnerability in Cisco Identity Services Engine (ISE) and ISE-PIC that allows an authenticated attacker with administrative credentials to execute commands on the underlying operating system, escalate privileges, and gain root access.
A critical command execution vulnerability in Cisco Identity Services Engine (ISE) and ISE-PIC caused by insufficient validation of user-supplied input, allowing an authenticated attacker with administrative credentials to execute commands, gain OS-level access, and escalate privileges to root.
A critical remote code execution vulnerability in Cisco Identity Services Engine (ISE) and ISE Passive Identity Connector (ISE-PIC) that allows an authenticated administrative attacker to execute arbitrary commands on the underlying operating system.
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.