CVE record · CVE-2023-20018

Authentication bypass in Cisco Session Initiation Protocol (SIP) Software

CVSS 8.6 HighEPSS 0.0063 · 50th percentile

Published by the CVE Program (CNA: cisco) at 19 Jan 2023, 01:35 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Cisco	Cisco Session Initiation Protocol (SIP) Software	affected 9.3(4) 3rd Party affected 9.3(4)SR3 3rd Party affected 9.3(4)SR1 3rd Party affected 9.3(4)SR2 3rd Party affected 11.0(3)SR3 affected 11.0(2)SR1 affected 11.5(1) affected 11.0(5)SR2 affected 11.0(2) affected 11.7(1) affected 11.0(4)SR3 affected 11.0(0.7) MPP and 63 more

Identifiers: CVE-2023-20018
CNA: cisco
Weakness (CWE): CWE-288
Tags: Cisco Session Initiation Protocol (SIP) Software
Authentication bypass
Published: 19 Jan 2023
Updated: 2 Aug 2024

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
8.6	High	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H	CNA (cisco)

CISA KEV Not listed.
EPSS 0.0063, the 50th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 19 Jan 2023. New records show when each source confirmed them.

Sources

References from the CNA

sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ip-phone-auth-bypass-pSqxZRPR

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.