Cisco delivers five IOS patches on new schedule

The vulnerability tracking firm rated the bugs "moderately critical."

Among the notable fixes, Cisco said that its IOS contains multiple vulnerabilities in the Data-Link Switching (DLSw) feature that could cause the system to reboot or cause memory leaks when processing specially crafted UDP or IP 91 protocol packets.

The company also patched its IOS after learning that Internet Protocol version 6 (IPv6) devices may be subject to a DoS attack.

Cisco reported a vulnerability in its implementation of Multicast Virtual Private Network (MVPN) is also exploitable.

Beginning with this latest round of patches, the company will release bundles of IOS security advisories on the fourth Wednesday in March and September. Cisco follows in the footsteps of Microsoft and Oracle, which deliver their patches on a schedule.

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