CVE-2023-20018: high-severity vulnerability in Cisco Session Initiation Protocol (SIP) Software
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.6epss 0.6%
A vulnerability in the web-based management interface of Cisco IP Phone 7800 and 8800 Series Phones could allow an unauthenticated, remote attacker to bypass authentication on an affected device.
This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted request to the web-based management interface. A successful exploit could allow the attacker to access certain parts of the web interface that would normally require authentication.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
Affected products
Cisco · Cisco Session Initiation Protocol (SIP) SoftwareRelated CVEs — Cisco Session Initiation Protocol (SIP) Software
In the same product, most dangerous first.
CVE-2022-20968HIGHCVE-2022-20968EPSS 6.4%CVE-2026-20281HIGHCisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP Software Denial of Service VulnerabilityEPSS 0.6%CVE-2025-20350HIGHCisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP Firmware Denial of Service VulnerabilityEPSS 0.5%CVE-2023-20265MEDIUMCVE-2023-20265EPSS 0.5%CVE-2024-20445MEDIUMCisco IP Phone 7800, 8800, and 9800 Series Information Disclosure VulnerabilityEPSS 0.4%CVE-2025-20336MEDIUMCisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP Firmware Information Disclosure VulnerabilityEPSS 0.4%