Cisco has released software updates for its Firepower, IOS, Adaptive Security Appliance (ASA) and Unified Communications Manager (Unified CM) products to address high severity denial-of-service (DoS) vulnerabilities.

One of the flaws, identified as CVE-2016-6368, can affect several products running Cisco Firepower System Software, including ASA, Advanced Malware Protection (AMP), Firepower, Sourcefire 3D and Industrial Security appliances. An unauthenticated attacker can exploit the vulnerability remotely to cause a DoS condition.

Related: Cisco Launches New Firepower Firewalls

A DoS vulnerability (CVE-2017-3808) that can be exploited by a remote, unauthenticated attacker has also been found in Cisco Unified CM, namely in the session initiation protocol UDP throttling process.

Several high severity DoS flaws have also been discovered in the EnergyWise module of Cisco’s IOS and IOS XE software. EnergyWise is designed for monitoring and managing the power usage of devices in a domain, including networking devices and Power over Ethernet (PoE) endpoints.

Cisco has also published four advisories describing remotely exploitable weaknesses in its ASA software. The security holes affect components such as the IKEv1 XAUTH code, the SSL/TLS code, IPsec code and DNS code.

Two of the vulnerabilities can be exploited by an unauthenticated attacker, while the other two require authentication.

Most of these flaws have been discovered by Cisco itself and there is no evidence that any of them have been exploited for malicious purposes.

Cisco is one of the several tech companies whose products have been targeted by exploits described recently by WikiLeaks as part of a dump called “Vault 7.” The networking giant has discovered a zero-day vulnerability affecting many of its switches.

Patches have yet to be made available for the flaw and Cisco warned customers last week that a researcher has released a proof-of-concept (PoC) exploit.

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Eduard Kovacs is an international correspondent for SecurityWeek. He worked as a high school IT teacher for two years before starting a career in journalism as Softpedia’s security news reporter. Eduard holds a bachelor’s degree in industrial informatics and a master’s degree in computer techniques applied in electrical engineering.

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