Is CVE-2022-20823 in the CISA KEV catalog?

No. CVE-2022-20823 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-20823?

CVE-2022-20823 has a CVSS v3 base score of 8.6 (HIGH).

What is the EPSS score for CVE-2022-20823?

CVE-2022-20823 has an EPSS score of 1.02% (59th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2022-20823?

No published fix for CVE-2022-20823 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2022-20823

HIGH

8.6

CVSS v3

NVD

Description

A vulnerability in the OSPF version 3 (OSPFv3) feature of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to incomplete input validation of specific OSPFv3 packets. An attacker could exploit this vulnerability by sending a malicious OSPFv3 link-state advertisement (LSA) to an affected device. A successful exploit could allow the attacker to cause the OSPFv3 process to crash and restart multiple times, causing the affected device to reload and resulting in a DoS condition. Note: The OSPFv3 feature is disabled by default. To exploit this vulnerability, an attacker must be able to establish a full OSPFv3 neighbor state with an affected device. For more information about exploitation conditions, see the Details section of this advisory.

CWE-126Buffer Over-read CWE-125Out-of-bounds Read

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeChanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Exploit Intelligence

1.02%probability of exploitation in 30 days

59thpercentile

Moderate risk: more likely to be exploited than 59% of all known CVEs.

References

Vendor Advisory1

tools.cisco.com

Embed a live status badge for CVE-2022-20823

Markdown

[![CVE-2022-20823](https://tridentstack.com/cve/badge/CVE-2022-20823.svg)](https://tridentstack.com/cve/CVE-2022-20823)

HTML

<a href="https://tridentstack.com/cve/CVE-2022-20823"><img src="https://tridentstack.com/cve/badge/CVE-2022-20823.svg" alt="CVE-2022-20823"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.