CVE-2023-20185
A vulnerability in the Cisco ACI Multi-Site CloudSec encryption feature of Cisco Nexus 9000 Series Fabric Switches in ACI mode could allow…
- Published
- Updated
- Reserved
- Assigned by
- cisco
Description
A vulnerability in the Cisco ACI Multi-Site CloudSec encryption feature of Cisco Nexus 9000 Series Fabric Switches in ACI mode could allow an unauthenticated, remote attacker to read or modify intersite encrypted traffic. This vulnerability is due to an issue with the implementation of the ciphers that are used by the CloudSec encryption feature on affected switches. An attacker with an on-path position between the ACI sites could exploit this vulnerability by intercepting intersite encrypted traffic and using cryptanalytic techniques to break the encryption. A successful exploit could allow the attacker to read or modify the traffic that is transmitted between the sites. Cisco has not released and will not release software updates that address this vulnerability.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| ciscoCNA (assigner) | 3.1 | High7.4 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
| NVDNVD · Modified | 3.1 | High7.4 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
- EPSS (exploitation in 30 days)
- 0.34% · top 72% of all CVEs (6 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.4.
Weakness
Affected products
Cisco · Cisco NX-OS System Software in ACI Mode
- affected 14.0(1h)
- affected 14.0(2c)
- affected 14.0(3d)
- affected 14.0(3c)
- affected 14.1(1i)
- affected 14.1(1j)
- affected 14.1(1k)
- affected 14.1(1l)
- affected 14.1(2g)
- affected 14.1(2m)
- affected 14.1(2o)
- affected 14.1(2s)
- affected 14.1(2u)
- affected 14.1(2w)
- affected 14.1(2x)
- affected 14.2(1i)
- affected 14.2(1j)
- affected 14.2(1l)
- affected 14.2(2e)
- affected 14.2(2f)
- affected 14.2(2g)
- affected 14.2(3j)
- affected 14.2(3l)
- affected 14.2(3n)
- affected 14.2(3q)
- affected 14.2(4i)
- affected 14.2(4k)
- affected 14.2(4o)
- affected 14.2(4p)
- affected 14.2(5k)
- affected 14.2(5l)
- affected 14.2(5n)
- affected 14.2(6d)
- affected 14.2(6g)
- affected 14.2(6h)
- affected 14.2(6l)
- affected 14.2(7f)
- affected 14.2(7l)
- affected 14.2(6o)
- affected 14.2(7q)
- and 44 more
What to do
Exploitation: The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.
References (1)
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)
- 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://trackcve.app/cve/CVE-2023-20185)Record last updated .