7.4

CVE-2023-20185: cisco cisco nx-os system software in aci mode Use of Insufficiently Random Values

CVSS: 7.4v3.1HighModified
Published 12-07-2023Last modified 02-08-2024
Open JSON

Vulnerability summary

CVE-2023-20185 is a high (CVSS 7.4) Use of Insufficiently Random Values vulnerability in cisco cisco nx-os system software in aci mode. EPSS estimates a 0.34% chance of exploitation in the next 30 days, higher than 26.3% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.4/10
010
High · v3.1 (CVE.org)
EPSS score
0.34%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 12-07-2023
    PublishedVulnerability first disclosed.
  2. 02-08-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.34%

Chance of exploitation in the next 30 days

Percentile

26%

Versus all other CVEs

30-day change

0.00 pp

From 0.35% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.34%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Cisco2 products
  • cisco nx-os system software in aci mode14.0(1h) | 14.0(2c) | 14.0(3d) | 14.0(3c) | 14.1(1i) | 14.1(1j) | 14.1(1k) | 14.1(1l) | 14.1(2g) | 14.1(2m) | 14.1(2o) | 14.1(2s) | 14.1(2u) | 14.1(2w) | 14.1(2x) | 14.2(1i) | 14.2(1j) | 14.2(1l) | 14.2(2e) | 14.2(2f) | 14.2(2g) | 14.2(3j) | 14.2(3l) | 14.2(3n) | 14.2(3q) | 14.2(4i) | 14.2(4k) | 14.2(4o) | 14.2(4p) | 14.2(5k) | 14.2(5l) | 14.2(5n) | 14.2(6d) | 14.2(6g) | 14.2(6h) | 14.2(6l) | 14.2(7f) | 14.2(7l) | 14.2(6o) | 14.2(7q) | 14.2(7r) | 14.2(7s) | 14.2(7t) | 14.2(7u) | 14.2(7v) | 14.2(7w) | 15.0(1k) | 15.0(1l) | 15.0(2e) | 15.0(2h) | 15.1(1h) | 15.1(2e) | 15.1(3e) | 15.1(4c) | 15.2(1g) | 15.2(2e) | 15.2(2f) | 15.2(2g) | 15.2(2h) | 15.2(3e) | 15.2(3f) | 15.2(3g) | 15.2(4d) | 15.2(4e) | 15.2(5c) | 15.2(5d) | 15.2(5e) | 15.2(4f) | 15.2(6e) | 15.2(6g) | 15.2(7f) | 15.2(7g) | 15.2(8d) | 15.2(8e) | 15.2(8f) | 15.2(8g) | 15.2(8h) | 16.0(1g) | 16.0(1j) | 16.0(2h) | 16.0(2j) | 16.0(3d) | 16.0(3e) | 15.3(1d)
  • nx-os14.0\(1h\) | 14.0\(2c\) | 14.0\(3c\) | 14.0\(3d\) | 14.1\(1i\) | 14.1\(1j\) | 14.1\(1k\) | 14.1\(1l\) | 14.1\(2g\) | 14.1\(2m\) | 14.1\(2o\) | 14.1\(2s\) | 14.1\(2u\) | 14.1\(2w\) | 14.1\(2x\) | 14.2\(1i\) | 14.2\(1j\) | 14.2\(1l\) | 14.2\(2e\) | 14.2\(2f\) | 14.2\(2g\) | 14.2\(3j\) | 14.2\(3l\) | 14.2\(3n\) | 14.2\(3q\) | 14.2\(4i\) | 14.2\(4k\) | 14.2\(4o\) | 14.2\(4p\) | 14.2\(5k\) | 14.2\(5l\) | 14.2\(5n\) | 14.2\(6d\) | 14.2\(6g\) | 14.2\(6h\) | 14.2\(6l\) | 14.2\(6o\) | 14.2\(7f\) | 14.2\(7l\) | 14.2\(7q\) | 14.2\(7r\) | 14.2\(7s\) | 14.2\(7t\) | 14.2\(7u\) | 14.2\(7v\) | 14.2\(7w\) | 15.0\(1k\) | 15.0\(1l\) | 15.0\(2e\) | 15.0\(2h\) | 15.1\(1h\) | 15.1\(2e\) | 15.1\(3e\) | 15.1\(4c\) | 15.2\(1g\) | 15.2\(2e\) | 15.2\(2f\) | 15.2\(2g\) | 15.2\(2h\) | 15.2\(3e\) | 15.2\(3f\) | 15.2\(3g\) | 15.2\(4d\) | 15.2\(4e\) | 15.2\(4f\) | 15.2\(5c\) | 15.2\(5d\) | 15.2\(5e\) | 15.2\(6e\) | 15.2\(6g\) | 15.2\(7f\) | 15.2\(7g\) | 15.2\(8d\) | 16.0\(1g\) | 16.0\(1j\) | 16.0\(2h\)

1 vendor · 2 products

References

1 links