| Package | Affected versions | Patched versions |
|---|---|---|
| telepresence video communication server | = x7.0.1= x7.2.4= x8.1= x8.10= x8.10.4= x8.2.2= x8.5= x8.6= x8.7= x8.8= x8.9 | |
| unified communications manager im and presence service | = 11.5= 11.5(1) |
A vulnerability in the XCP Router service of the Cisco Unified Communications Manager IM & Presence Service (CUCM IM&P) and the Cisco TelePresence Video Communication Server (VCS) and Expressway could allow an unauthenticated, remote attacker to cause a temporary service outage for all IM&P users, resulting in a denial of service (DoS) condition. The vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by sending a malicious IPv4 or IPv6 packet to an affected device on TCP port 7400. An exploit could allow the attacker to overread a buffer, resulting in a crash and restart of the XCP Router service. Cisco Bug IDs: CSCvg97663, CSCvi55947.
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