cisco
New Cisco DoS flaw requires manual reboot to revive devices
Cisco released security updates to fix a Crosswork Network Controller (CNC) and Network Services Orchestrator (NSO) denial-of-service (DoS) vulnerability that requires manually rebooting targeted systems for recovery. Large enterprises and service providers leverage the CNC software suite to simplify multivendor network management and operations handling with automation, while the NSO orchestration platform helps them manage […]
Firestarter malware survives Cisco firewall updates, security patches
Cybersecurity agencies in the U.S. and U.K. are warning about a custom malware called Firestarter persisting on Cisco Firepower and Secure Firewall devices running Adaptive Security Appliance (ASA) or Firepower Threat Defense (FTD) software. The backdoor has been attributed to a threat actor that Cisco Talos tracks internally as UAT-4356, known for cyberespionage campaigns, including ArcaneDoor. […]
CISA flags new SD-WAN flaw as actively exploited in attacks
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has given government agencies four days to secure their systems against another Catalyst SD-WAN Manager vulnerability it flagged as actively exploited in attacks. Catalyst SD-WAN Manager (formerly known as vManage) is a network management software that helps admins monitor and manage up to 6,000 Catalyst SD-WAN devices […]
Cisco says critical Webex Services flaw requires customer action
Cisco has released security updates to patch four critical vulnerabilities, including a fixed improper certificate validation flaw in the company’s cloud-based Webex Services platform that requires further customer action. Webex Services is a customer experience platform that unifies communication across hybrid work environments, enabling team members to call, meet, and message each other from any […]
Hackers exploit React2Shell in automated credential theft campaign
Hackers are running a large-scale campaign to steal credentials in an automated way after exploiting React2Shell (CVE-2025-55182) in vulnerable Next.js apps. At least 766 hosts across various cloud providers and geographies have been compromised to collect database and AWS credentials, SSH private keys, API keys, cloud tokens, and environment secrets. The operation uses a framework named NEXUS Listener and […]
Critical Cisco IMC auth bypass gives attackers Admin access
Cisco has released security updates to address several critical and high-severity vulnerabilities, including an Integrated Management Controller (IMC) authentication bypass that allows attackers to gain Admin access. Also known as CIMC, Cisco IMC is a hardware module embedded on the motherboard of Cisco servers that provides out-of-band management (even if the operating system is powered off or crashed) for UCS […]
Cisco source code stolen in Trivy-linked dev environment breach
Cisco has suffered a cyberattack after threat actors used stolen credentials from the recent Trivy supply chain attack to breach its internal development environment and steal source code belonging to the company and its customers. A source, who asked to remain anonymous, told GeekFeed that Cisco’s Unified Intelligence Center, CSIRT, and EOC teams contained the breach […]
CISA orders feds to patch max-severity Cisco flaw by Sunday
The Cybersecurity and Infrastructure Security Agency (CISA) has ordered federal agencies to patch a maximum-severity vulnerability, CVE-2026-20131, in Cisco Secure Firewall Management Center (FMC) by Sunday, March 22. Cisco published a security bulletin about the flaw on March 4, urging system administrators to apply the security updates as soon as possible and warning that no workarounds are available. The […]
Ransomware gang exploits Cisco flaw in zero-day attacks since January
The Interlock ransomware gang has been exploiting a maximum severity remote code execution (RCE) vulnerability in Cisco’s Secure Firewall Management Center (FMC) software in zero-day attacks since late January. The Interlock ransomware operation surfaced in September 2024 and has been linked to ClickFix and to malware attacks in which they deployed a remote access trojan called NodeSnake on the networks of […]
Cisco flags more SD-WAN flaws as actively exploited in attacks
Cisco has flagged two Catalyst SD-WAN Manager security flaws as actively exploited in the wild, urging administrators to upgrade vulnerable devices. Catalyst SD-WAN Manager (formerly vManage) is network management software that enables admins to monitor and manage up to 6,000 Catalyst SD-WAN devices from a single centralized dashboard. “In March 2026, the Cisco PSIRT became […]