What is CVE-2022-20804?

CVE-2022-20804 is a medium-severity vulnerability in Cisco Unified Communications Manager, classified under Improper Check for Unusual or Exceptional Conditions. CVSS score: 5.3/10. Published 2022-04-21.

How severe is CVE-2022-20804?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Cisco Unified Communications Manager

CVE-2022-20804

A vulnerability in the Cisco Discovery Protocol of Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an unauthenticated, adjacent attacker to cause a kernel panic on an affected system, resulting in a denial of service (DoS) condition. This vulnerability is due to incorrect processing of certain Cisco Discovery Protocol packets. An attacker could exploit this vulnerability by continuously sending certain Cisco Discovery Protocol packets to an affected device. A successful exploit could allow the attacker to cause a kernel panic on the system that is running the affected software, resulting in a DoS condition.

EPSS: 0.003 (26.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Cisco Unified Communications Manager — versions n/a
Cisco Unified_communications_manager

Weakness classification (CWE)

CWE-754 — Improper Check for Unusual or Exceptional Conditions

References

psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2022-20804?: CVE-2022-20804 is a medium-severity vulnerability in Cisco Unified Communications Manager, classified under Improper Check for Unusual or Exceptional Conditions. CVSS score: 5.3/10. Published 2022-04-21.
How severe is CVE-2022-20804?: Medium severity. CVSS v3 base score is 5.3 out of 10.