CVE-2022-20813
CRITICALCisco Expressway and TelePresence VCS < X14.0.7 - Arbitrary File Overwrite and Null Byte Poisoning
Title source: llmDescription
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.
References (1)
Core 1
Core References
Vendor Advisory vendor-advisory
x_refsource_cisco
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-expressway-overwrite-3buqW8LH
Scores
CVSS v3
9.0
EPSS
0.0040
EPSS Percentile
61.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-295
CWE-158
Status
published
Products (2)
cisco/expressway
< x14.0.7
cisco/telepresence_video_communication_server
< x14.0.7
Published
Jul 06, 2022
Tracked Since
Feb 18, 2026