What is CVE-2022-20837?

CVE-2022-20837 is a high-severity vulnerability in Cisco Asr_1000-esp100-x, classified under Improper Check for Unusual or Exceptional Conditions. CVSS score: 8.6/10. Published 2022-10-10.

How severe is CVE-2022-20837?

High severity. CVSS v3 base score is 8.6 out of 10.

Vulnerability in Cisco Asr_1000-esp100-x

CVE-2022-20837

A vulnerability in the DNS application layer gateway (ALG) functionality that is used by Network Address Translation (NAT) in Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. This…

EPSS: 0.009 (54.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.

Affected products

Cisco Asr_1000-esp100-x
Cisco Asr_1000-esp200-x
Cisco Catalyst_8500
Cisco Catalyst_8500-4qc
Cisco Ios Xe Software — versions n/a
Cisco Ios_xe

Weakness classification (CWE)

CWE-754 — Improper Check for Unusual or Exceptional Conditions

References

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

Frequently asked questions

What is CVE-2022-20837?: CVE-2022-20837 is a high-severity vulnerability in Cisco Asr_1000-esp100-x, classified under Improper Check for Unusual or Exceptional Conditions. CVSS score: 8.6/10. Published 2022-10-10.
How severe is CVE-2022-20837?: High severity. CVSS v3 base score is 8.6 out of 10.