CVEvulnerability

CVE-2020-3596

7.5 HIGH Published 2020-10-08 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2020-10-08
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.9 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected])
7.8 HIGH — AV:N/AC:L/Au:N/C:N/I:N/A:C
Weaknesses
CWE-670, CWE-789

Description

A vulnerability in the Session Initiation Protocol (SIP) of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to incorrect handling of incoming SIP traffic. An attacker could exploit this vulnerability by sending a series of SIP packets to an affected device. A successful exploit could allow the attacker to exhaust memory on an affected device, causing it to crash and leading to a DoS condition.

Affected configurations

• cisco expressway (<= x12.6.3) • cisco telepresence video communication server (<= x12.6.3)

Related

Weakness · CWE (2)

  • CWE-670 Always-Incorrect Control Flow Implementation weakness
  • CWE-789 Memory Allocation with Excessive Size Value weakness

References