CVE-2023-20185

7.4 HIGH 0.3% exploit odds Fix listed

What it is

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.

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of data exposure, data tampering.
Exploit odds: 0.3% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2023-07-12 14:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 05:29 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 0.3% in the next 30 days (EPSS).
Severity: 7.4 HIGH (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2023-07-12 14:15 UTC
Last modified: 2026-06-17 05:29 UTC
Exploit probability: 0.3% · EPSS, next 30 days
Weakness: CWE-330
Record status: Modified

Affected

Cisco nx-os 14.0\(1h\)
Cisco nx-os 14.0\(2c\)
Cisco nx-os 14.0\(3c\)
Cisco nx-os 14.0\(3d\)
Cisco nx-os 14.1\(1i\)
Cisco nx-os 14.1\(1j\)
Cisco nx-os 14.1\(1k\)
Cisco nx-os 14.1\(1l\)

Attack profile CVSS 3.1 · 7.4

Attack vector: Network
Complexity: High
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: None

Raw vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2023-20185.md and follow it. Check whether this project is affected by CVE-2023-20185. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

· More options · Status badge

Download Square Reddit

Fix and advisories

References

NVD record · CVE.org record