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Cisco

Critical Cisco Flaw Lets Hackers Remotely Take Over Unified Comms Systems

Cisco has released patches to address a critical security flaw impacting Unified Communications and Contact Center Solutions products that could permit an unauthenticated, remote attacker to execute arbitrary code on an affected device. Tracked as CVE-2024-20253 (CVSS score: 9.9), the issue stems from improper processing of user-provided data that a threat actor could abuse to […]

Cisco Fixes High-Risk Vulnerability Impacting Unity Connection Software

Cisco has released software updates to address a critical security flaw impacting Unity Connection that could permit an adversary to execute arbitrary commands on the underlying system. Tracked as CVE-2024-20272 (CVSS score: 7.3), the vulnerability is an arbitrary file upload bug residing in the web-based management interface and is the result of a lack of […]

Backdoor Implant on Hacked Cisco Devices Modified to Evade Detection

The backdoor implanted on Cisco devices by exploiting a pair of zero-day flaws in IOS XE software has been modified by the threat actor so as to escape visibility via previous fingerprinting methods. “Investigated network traffic to a compromised device has shown that the threat actor has upgraded the implant to do an extra header […]

Cisco Releases Urgent Patch to Fix Critical Flaw in Emergency Responder Systems

Cisco has released updates to address a critical security flaw impacting Emergency Responder that allows unauthenticated, remote attackers to sign into susceptible systems using hard-coded credentials. The vulnerability, tracked as CVE-2023-20101 (CVSS score: 9.8), is due to the presence of static user credentials for the root account that the company said is usually reserved for […]

Critical Flaws in Cisco Small Business Switches Could Allow Remote Attacks

Cisco has released updates to address a set of nine security flaws in its Small Business Series Switches that could be exploited by an unauthenticated, remote attacker to run arbitrary code or cause a denial-of-service (DoS) condition. “These vulnerabilities are due to improper validation of requests that are sent to the web interface,” Cisco said, […]

U.S. and U.K. Warn of Russian Hackers Exploiting Cisco Router Flaws for Espionage

U.K. and U.S. cybersecurity and intelligence agencies have warned of Russian nation-state actors exploiting now-patched flaws in networking equipment from Cisco to conduct reconnaissance and deploy malware against select targets. The intrusions, per the authorities, took place in 2021 and targeted a small number of entities in Europe, U.S. government institutions, and about 250 Ukrainian […]

Cisco Issues Warning for Unpatched Vulnerabilities in EoL Business Routers

Cisco has warned of two security vulnerabilities affecting end-of-life (EoL) Small Business RV016, RV042, RV042G, and RV082 routers that it said will not be fixed, even as it acknowledged the public availability of proof-of-concept (PoC) exploit. The issues are rooted in the router’s web-based management interface, enabling a remote adversary to sidestep authentication or execute […]

Hackers Actively Exploiting Cisco AnyConnect and GIGABYTE Drivers Vulnerabilities

Cisco has warned of active exploitation attempts targeting a pair of two-year-old security flaws in the Cisco AnyConnect Secure Mobility Client for Windows. Tracked as CVE-2020-3153 (CVSS score: 6.5) and CVE-2020-3433 (CVSS score: 7.8), the vulnerabilities could enable local authenticated attackers to perform DLL hijacking and copy arbitrary files to system directories with elevated privileges. […]

Infra Used in Cisco Hack Also Targeted Workforce Management Solution

The attack infrastructure used to target Cisco in the May 2022 incident was also employed against an attempted compromise of an unnamed workforce management solutions holding company a month earlier in April 2022. Cybersecurity firm eSentire, which disclosed the findings, raised the possibility that the intrusions could be the work of a criminal actor known […]

Cisco Patches High-Severity Vulnerability Affecting ASA and Firepower Solutions

Cisco on Wednesday released patches to contain multiple flaws in its software that could be abused to leak sensitive information on susceptible appliances. The issue, assigned the identifier CVE-2022-20866 (CVSS score: 7.4), has been described as a “logic error” when handling RSA keys on devices running Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower […]

Cisco Confirms It’s Been Hacked by Yanluowang Ransomware Gang

Networking equipment major Cisco on Wednesday confirmed it was the victim of a cyberattack on May 24, 2022 after the attackers got hold of an employee’s personal Google account that contained passwords synced from their web browser. “Initial access to the Cisco VPN was achieved via the successful compromise of a Cisco employee’s personal Google […]

Pakistani Hackers Targeting Indian Students in Latest Malware Campaign

The advanced persistent threat (APT) group known as Transparent Tribe has been attributed to a new ongoing phishing campaign targeting students at various educational institutions in India at least since December 2021. “This new campaign also suggests that the APT is actively expanding its network of victims to include civilian users,” Cisco Talos said in […]

Researchers Detail Bug That Could Paralyze Snort Intrusion Detection System

Details have emerged about a now-patched security vulnerability in the Snort intrusion detection and prevention system that could trigger a denial-of-service (DoS) condition and render it powerless against malicious traffic. Tracked as CVE-2022-20685, the vulnerability is rated 7.5 for severity and resides in the Modbus preprocessor of the Snort detection engine. It affects all open-source […]

Attackers Can Crash Cisco Email Security Appliances by Sending Malicious Emails

Cisco has released security updates to contain three vulnerabilities affecting its products, including one high-severity flaw in its Email Security Appliance (ESA) that could result in a denial-of-service (DoS) condition on an affected device. The weakness, assigned the identifier CVE-2022-20653 (CVSS score: 7.5), stems from a case of insufficient error handling in DNS name resolution […]