Critical severity9.0NVD Advisory· Published Jul 6, 2022· Updated Jun 17, 2026

CVE-2022-20813

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Cisco Systems, Inc./Expressway Software
cpe:2.3:a:cisco:expressway:*:*:*:*:*:*:*:*
Range: <x14.0.7
Cisco Systems, Inc./Telepresence Video Communication Server3 versions
cpe:2.3:a:cisco:telepresence_video_communication_server:*:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:a:cisco:telepresence_video_communication_server:*:*:*:*:*:*:*:*range: <x14.0.7
- (no CPE)range: n/a
- (no CPE)
Cisco Systems, Inc./Expressway Seriesllm-fuzzy

Patches

Vulnerability mechanics

References

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-expressway-overwrite-3buqW8LHnvdVendor Advisory

News mentions

No linked articles in our index yet.

cvss	0.585
epss	0.001
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000