CVE-2024-20353

CVE

Threat entity extracted from intelligence sources

Frequency

occurrences

First Seen

November 6, 2025

Last Seen

October 29, 2026

API

Exploited in Wild

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Ransomware Use

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Public Exploits

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Attack Vector

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Vulnerability Overview

Exploitation Activity

Exploitation Intelligence

Cisco Firewall Zero-Day CVE-2026-76418 Actively Exploited72.8

Cisco has disclosed a high-severity zero-day vulnerability, CVE-2026-76418, affecting its Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) software. This flaw allows unauthenticated remote attackers to crash devices by sending crafted requests to the Remote...

Cisco ASA Zero-Day Exploited in State-Espionage Campaign50.0

Cisco disclosed a state-espionage campaign targeting its Adaptive Security Appliances (ASA), which are used for firewall and VPN functions. Attackers exploited two zero-day vulnerabilities to infiltrate government entities globally, deploying custom malware backdoors named 'Line Runner' and 'Line Da...

Cisco Faces Multiple Critical Vulnerabilities in Unified CCX and Firewalls40.1

Cisco has disclosed critical vulnerabilities in its Unified Contact Center Express (CCX) platform and Adaptive Security Appliances (ASA) that allow unauthenticated remote attackers to execute arbitrary code and potentially gain root access. The vulnerabilities, tracked as CVE-2025-20354 and CVE-2025...

Cisco Warns of New Attack Variant Targeting Firewalls39.8

Cisco Systems has issued a warning regarding a new attack variant targeting its Secure Firewall devices, leveraging vulnerabilities CVE-2025-20333 and CVE-2025-20362. These vulnerabilities could potentially lead to denial-of-service conditions or remote code execution. The attacks have been ongoing...