Cisco ASA
CISA warns feds to fully patch actively exploited Cisco flaws
CISA warned U.S. federal agencies to fully patch two actively exploited vulnerabilities in Cisco Adaptive Security Appliances (ASA) and Firepower devices. Tracked as CVE-2025-20362 and CVE-2025-20333, these security flaws allow remote threat actors to access restricted URL endpoints without authentication and gain code execution on vulnerable Cisco firewall devices, respectively. If chained, they can enable unauthenticated attackers to […]
Cisco: Actively exploited firewall flaws now abused for DoS attacks
Cisco warned this week that two vulnerabilities, which have been used in zero-day attacks, are now being exploited to force ASA and FTD firewalls into reboot loops. The tech giant released security updates on September 25 to address the two security flaws, stating that CVE-2025-20362 enables remote threat actors to access restricted URL endpoints without authentication, while CVE-2025-20333 allows authenticated attackers […]
Nearly 50,000 Cisco firewalls vulnerable to actively exploited flaws
Roughly 50,000 Cisco Adaptive Security Appliance (ASA) and Firewall Threat Defense (FTD) appliances exposed on the public web are vulnerable to two vulnerabilities actively leveraged by hackers. The flaws, tracked as CVE-2025-20333 and CVE-2025-20362, enable arbitrary code execution and access to restricted URL endpoints associated with VPN access. Both security issues can be exploited remotely […]
CISA orders agencies to patch Cisco flaws exploited in zero-day attacks
CISA has issued a new emergency directive ordering U.S. federal agencies to secure their Cisco firewall devices against two flaws that have been exploited in zero-day attacks. Emergency Directive 25-03 was issued to Federal Civilian Executive Branch (FCEB) agencies on September 25 and requires them to patch CVE-2025-20333 and CVE-2025-20362 vulnerabilities in Adaptive Security Appliance (ASA) and Firewall Threat […]
Cisco warns of ASA firewall zero-days exploited in attacks
Cisco warned customers today to patch two zero-day vulnerabilities that are actively being exploited in attacks and impact the company’s firewall software. The first one (CVE-2025-20333) allows authenticated, remote attackers to execute arbitrary code on devices running vulnerable Adaptive Security Appliance (ASA) and Firewall Threat Defense (FTD) software, while the second (CVE-2025-20362) enables remote attackers […]
Surge in networks scans targeting Cisco ASA devices raise concerns
Large network scans have been targeting Cisco ASA devices, prompting warnings from cybersecurity researchers that it could indicate an upcoming flaw in the products. GreyNoise has recorded two significant scanning spikes in late August, with up to 25,000 unique IP addresses probing ASA login portals and also Cisco IOS Telnet/SSH. The second wave, logged on August 26, 2025, was […]