Is CVE-2022-20812 in the CISA KEV catalog?

No. CVE-2022-20812 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-20812?

CVE-2022-20812 has a CVSS v3 base score of 9.0 (CRITICAL).

What is the EPSS score for CVE-2022-20812?

CVE-2022-20812 has an EPSS score of 1.74% (75th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-20812?

Upgrade expressway to x14.0.7 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2022-20812

CRITICALEPSS 75th pctl

9.0

CVSS v3

NVD

Description

Multiple vulnerabilities in the API and in the web-based management interface of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) could allow a remote attacker to overwrite arbitrary files or conduct null byte poisoning attacks on an affected device. Note: Cisco Expressway Series refers to the Expressway Control (Expressway-C) device and the Expressway Edge (Expressway-E) device. For more information about these vulnerabilities, see the Details section of this advisory.

CWE-158 CWE-22Path Traversal

How to fix

Remediation Available

expresswayNVD

Affected:< x14.0.7Fixed in:x14.0.7CVE-2022-20812derived from NVD

telepresence video communication serverNVD

Affected:< x14.0.7Fixed in:x14.0.7CVE-2022-20812derived 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 RequiredHigh

User InteractionNone

ScopeChanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityLow

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

Exploit Intelligence

1.74%probability of exploitation in 30 days

75thpercentile

Elevated risk: more likely to be exploited than 75% of all known CVEs.

References

Vendor Advisory2

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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.