CVE-2023-20116A vulnerability in the Administrative XML Web Service (AXL) API of Cisco Unified Communications Manager (Unified CM) and Cisco Unified…
- 6.8MediumCVSS base score
- 0.71%Exploitation in 30 daysEPSS · top 46% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
A vulnerability in the Administrative XML Web Service (AXL) API of Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient validation of user-supplied input to the web UI of the Self Care Portal. An attacker could exploit this vulnerability by sending crafted HTTP input to an affected device. A successful exploit could allow the attacker to cause a DoS condition on the affected device.
Timeline
ID reserved
By cisco
- 8 months later
· 8 months later
Published
- 13 months later
· 13 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| ciscoCNA (assigner) | 3.1 | Medium6.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:H |
| NVDNVD · Modified | 3.1 | Medium5.7 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.71% · top 46% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.8.
Affected products
Cisco · Cisco Unified Communications Manager
- affected 12.0(1)SU1
- affected 12.0(1)SU2
- affected 12.0(1)SU3
- affected 12.0(1)SU4
- affected 12.0(1)SU5
- affected 12.5(1)
- affected 12.5(1)SU1
- affected 12.5(1)SU2
- affected 12.5(1)SU3
- affected 12.5(1)SU4
- affected 12.5(1)SU5
- affected 12.5(1)SU6
- affected 12.5(1)SU7
- affected 12.5(1)SU7a
- affected 14
- affected 14SU1
- affected 14SU2
Cisco · Cisco Unified Communications Manager / Cisco Unity Connection
- affected 10.5(2)SU10
- affected 10.5(1)
- affected 10.5(1)SU1
- affected 10.5(1)SU1a
- affected 10.5(2)
- affected 10.5(2)SU1
- affected 10.5(2)SU2
- affected 10.5(2)SU3
- affected 10.5(2)SU4
- affected 10.5(2)SU5
- affected 10.5(2)SU6
- affected 10.5(2)SU7
- affected 10.5(2)SU8
- affected 10.5(2)SU9
- affected 10.5(2)SU2a
- affected 10.5(2)SU3a
- affected 10.5(2)SU4a
- affected 10.5(2)SU6a
- affected 11.0(1)
- affected 11.0(1a)
- affected 11.0(1a)SU1
- affected 11.0(1a)SU2
- affected 11.0(1a)SU3
- affected 11.0(1a)SU3a
- affected 11.0(1a)SU4
- affected 11.0.1
- affected 11.0.2
- affected 11.0.5
- affected 11.5(1)
- affected 11.5(1)SU1
- affected 11.5(1)SU2
- affected 11.5(1)SU3
- affected 11.5(1)SU3a
- affected 11.5(1)SU3b
- affected 11.5(1)SU4
- affected 11.5(1)SU5
- affected 11.5(1)SU6
- affected 11.5(1)SU7
- affected 11.5(1)SU8
- affected 11.5(1)SU9
- and 5 more
What to do
Exploitation: The Cisco PSIRT is aware that proof-of-concept exploit code is available for the vulnerability described in this advisory. The Cisco PSIRT is not aware of any malicious use of the vulnerability that is described in this advisory.
References
References1
- cisco-sa-cucm-dos-4Ag3yWbD (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2023-24295 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2023-20116)Record last updated .