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CVE-2024-20399

CVE

Threat entity extracted from intelligence sources

Frequency
2
occurrences
First Seen
November 10, 2025
Last Seen
June 24, 2026
API
Exploited in Wild
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Ransomware Use
—
Public Exploits
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Attack Vector
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Vulnerability Overview

Exploitation Activity

Exploitation Intelligence

Operation Highland, attributed to the Velvet Ant cyberespionage group, involved a sophisticated attack that began in 2016 and persisted undetected for a decade. The attackers hijacked the authentication stack of a major organization's isolated network, allowing them full visibility into administrati...

A critical vulnerability in Cisco's Identity Services Engine (ISE), tracked as CVE-2024-20399, allows unauthenticated remote attackers to trigger system restarts, leading to denial-of-service conditions. The flaw affects ISE versions 3.4.0 through 3.4 Patch 3 and can be exploited by sending speciall...

A critical denial-of-service vulnerability in Cisco's Identity Services Engine (ISE) has been identified, allowing unauthenticated attackers to crash the system. The flaw, tracked as CVE-2024-20399, affects ISE versions 3.4.0 through 3.4 Patch 3 and can be exploited by sending specially crafted RADI...

Public Exploits

Checking GitHub for proof-of-concept code…