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Category — Snort
Cisco Patches ISE Security Vulnerability After Public PoC Exploit Release

Cisco Patches ISE Security Vulnerability After Public PoC Exploit Release

Jan 08, 2026 Network Security / Vulnerability
Cisco has released updates to address a medium-severity security flaw in Identity Services Engine (ISE) and ISE Passive Identity Connector (ISE-PIC) with a public proof-of-concept (PoC) exploit. The vulnerability, tracked as CVE-2026-20029 (CVSS score: 4.9), resides in the licensing feature and could allow an authenticated, remote attacker with administrative privileges to gain access to sensitive information. "This vulnerability is due to improper parsing of XML that is processed by the web-based management interface of Cisco ISE and Cisco ISE-PIC," Cisco said in a Wednesday advisory. "An attacker could exploit this vulnerability by uploading a malicious file to the application." Successful exploitation of the shortcoming could allow an attacker with valid administrative credentials to read arbitrary files from the underlying operating system, which the company said should be off-limits even to administrators. Bobby Gould of Trend Micro Zero Day Initiative h...
Researchers Detail Bug That Could Paralyze Snort Intrusion Detection System

Researchers Detail Bug That Could Paralyze Snort Intrusion Detection System

Apr 20, 2022
Details have emerged about a now-patched security vulnerability in the Snort intrusion detection and prevention system that could trigger a denial-of-service (DoS) condition and render it powerless against malicious traffic. Tracked as  CVE-2022-20685 , the vulnerability is rated 7.5 for severity and resides in the Modbus preprocessor of the Snort detection engine. It affects all open-source Snort project releases earlier than 2.9.19 as well as version 3.1.11.0. Maintained by Cisco,  Snort  is an open-source intrusion detection system (IDS) and intrusion prevention system (IPS) that offers real-time network traffic analysis to spot potential signs of malicious activity based on predefined rules. "The vulnerability, CVE-2022-20685, is an integer-overflow issue that can cause the Snort Modbus OT preprocessor to enter an infinite  while loop ," Uri Katz, a security researcher with Claroty,  said  in a report published last week. "A successful exploit keep...
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