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CVE-2026-20148 is an authenticated remote path traversal vulnerability in Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC). The flaw is caused by improper validation of user-supplied input in HTTP requests handled by the management interface. An attacker with valid administrative credentials can send a crafted HTTP request that traverses directories on the underlying operating system and reads arbitrary files, including sensitive files accessible to the affected application or system context.
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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.
11 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Medium-severity directory traversal vulnerability in Cisco ISE and Cisco ISE-PIC caused by insufficient validation of user input in HTTP requests, allowing a remote attacker with administrative privileges to traverse directories and read arbitrary files on the operating system.
An authenticated path traversal vulnerability in Cisco Identity Services Engine (ISE) and ISE Passive Identity Connector (ISE-PIC) caused by improper input validation, allowing access to sensitive arbitrary files on the underlying operating system.
A companion authenticated path traversal vulnerability in Cisco ISE and Cisco ISE-PIC that allows an attacker with valid administrative credentials to read sensitive arbitrary files from 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.