Is CVE-2022-20691 in the CISA KEV catalog?

No. CVE-2022-20691 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-20691?

CVE-2022-20691 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2022-20691?

CVE-2022-20691 has an EPSS score of 0.63% (46th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-20691?

Upgrade ata 191 firmware to 11.2.2 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2022-20691

MEDIUM

5.3

CVSS v3

NVD

Description

A vulnerability in the Cisco Discovery Protocol functionality of Cisco ATA 190 Series Adaptive Telephone Adapter firmware could allow an unauthenticated, adjacent attacker to cause a DoS condition of an affected device. This vulnerability is due to missing length validation of certain Cisco Discovery Protocol packet header fields. An attacker could exploit this vulnerability by sending crafted Cisco Discovery Protocol packets to an affected device. A successful exploit could allow the attacker to cause the device to exhaust available memory and cause the service to restart. Cisco has released firmware updates that address this vulnerability.

CWE-400Resource Exhaustion CWE-1284

How to fix

Remediation Available

ata 191 firmwareNVD

Affected:< 11.2.2Fixed in:11.2.2CVE-2022-20691derived from NVD

Affected:< 12.0.1Fixed in:12.0.1CVE-2022-20691derived from NVD

ata 192 firmwareNVD

Affected:< 11.2.2Fixed in:11.2.2CVE-2022-20691derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityLow

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

Exploit Intelligence

0.63%probability of exploitation in 30 days

46thpercentile

Moderate risk: more likely to be exploited than 46% of all known CVEs.

References

Other references1

sec.cloudapps.cisco.com

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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.