cisco
Critical Cisco Smart Licensing Utility flaws now exploited in attacks
Attackers have started targeting Cisco Smart Licensing Utility (CSLU) instances unpatched against a vulnerability exposing a built-in backdoor admin account. The CSLU Windows application allows admins to manage licenses and linked products on-premises without connecting them to Cisco’s cloud-based Smart Software Manager solution. Cisco patched this security flaw (tracked as CVE-2024-20439) in September, describing it as “an […]
Cisco IOS XR vulnerability lets attackers crash BGP on routers
Cisco has patched a denial of service (DoS) vulnerability that lets attackers crash the Border Gateway Protocol (BGP) process on IOS XR routers with a single BGP update message. IOS XR runs on the company’s carrier-grade, Network Convergence System (NCS), and Carrier Routing System (CRS) series of routers, such as the ASR 9000, NCS 5500, and 8000 series. This high-severity flaw (tracked […]
Cisco warns of Webex for BroadWorks flaw exposing credentials
Cisco warned customers today of a vulnerability in Webex for BroadWorks that could let unauthenticated attackers access credentials remotely. Webex for BroadWorks integrates Cisco Webex’s video conferencing and collaboration features with the BroadWorks unified communications platform. While the company has yet to assign a CVE ID to track this security issue, Cisco says in a Tuesday security […]
CISA tags Windows, Cisco vulnerabilities as actively exploited
CISA has warned US federal agencies to secure their systems against attacks exploiting vulnerabilities in Cisco and Windows systems. While the cybersecurity agency has tagged these flaws as actively exploited in the wild, it has yet to provide specific details regarding this malicious activity and who is behind it. The first flaw (tracked as CVE-2023-20118) enables […]
Chinese hackers use custom malware to spy on US telecom networks
The Chinese state-sponsored Salt Typhoon hacking group uses a custom utility called JumbledPath to stealthily monitor network traffic and potentially capture sensitive data in cyberattacks on U.S. telecommunication providers. Salt Typhoon (aka Earth Estries, GhostEmperor, and UNC2286) is a sophisticated hacking group active since at least 2019, primarily focusing on breaching government entities and telecommunications companies. […]
Chinese hackers breach more US telecoms via unpatched Cisco routers
China’s Salt Typhoon hackers are still actively targeting telecoms worldwide and have breached more U.S. telecommunications providers via unpatched Cisco IOS XE network devices. Recorded Future’s Insikt Group threat research division states that the Chinese hacking group (tracked Salt Typhoon and RedMike) has exploited the CVE-2023-20198 privilege escalation and CVE-2023-20273 Web UI command injection vulnerabilities. These ongoing attacks have […]
Critical Cisco ISE bug can let attackers run commands as root
Cisco has released patches to fix two critical vulnerabilities in its Identity Services Engine (ISE) security policy management platform. Enterprise administrators use Cisco ISE as an identity and access management (IAM) solution that combines authentication, authorization, and accounting into a single appliance. The two security flaws (CVE-2025-20124 and CVE-2025-20125) can be exploited by authenticated remote […]
Cisco warns of denial of service flaw with PoC exploit code
Cisco has released security updates to patch a ClamAV denial-of-service (DoS) vulnerability, which has proof-of-concept (PoC) exploit code. Tracked as CVE-2025-20128, the vulnerability is caused by a heap-based buffer overflow weakness in the Object Linking and Embedding 2 (OLE2) decryption routine, allowing unauthenticated, remote attackers to trigger a DoS condition on vulnerable devices. If this vulnerability is […]
Volt Typhoon rebuilds malware botnet following FBI disruption
The Chinese state-sponsored hacking group Volt Typhoon has begun to rebuild its “KV-Botnet” malware botnet after it was disrupted by law enforcement in January, according to researchers from SecurityScorecard. Volt Typhoon is a Chinese state-sponsored cyberespionage threat group that is believed to have infiltrated critical U.S. infrastructure, among other networks worldwide, since at least five years ago. Their primary […]
Cisco Catalyst 9300: Password Recovery Procedure Explained
If you’ve forgotten the password to your Cisco Catalyst 9300 switch, don’t worry. There’s a standard recovery procedure to regain access, involving several steps to ensure security while restoring control. How to Reset a Forgotten Password on a Cisco Catalyst 9300 Switch Step 1: Accessing the Bootloader Mode Step 2: Bypassing the Startup Configuration The […]