5.8

CVE-2025-20339: cisco cisco sd-wan vedge cloud Improper Access Control

CVSS: 5.8v3.1MediumDeferred
Published 24-09-2025Last modified 24-09-2025
Open JSON

Vulnerability summary

CVE-2025-20339 is a medium (CVSS 5.8) Improper Access Control vulnerability in cisco cisco sd-wan vedge cloud. EPSS estimates a 0.32% chance of exploitation in the next 30 days, higher than 22.9% of scored vulnerabilities.

Overall risk
23/100
0100
Low · default modelHow is this calculated?
CVSS score
5.8/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.32%
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. 24-09-2025
    PublishedVulnerability first disclosed.
  2. 24-09-2025
    Last modifiedVulnerability information updated.

Description

A vulnerability in the access control list (ACL) processing of IPv4 packets of Cisco SD-WAN vEdge Software could allow an unauthenticated, remote attacker to bypass a configured ACL. This vulnerability is due to the improper enforcement of the implicit deny all at the end of a configured ACL. An attacker could exploit this vulnerability by attempting to send unauthorized traffic to an interface on an affected device. A successful exploit could allow the attacker to bypass an ACL on the affected device.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.32%

Chance of exploitation in the next 30 days

Percentile

23%

Versus all other CVEs

30-day change

0.00 pp

From 0.32% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.32%

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 sd-wan vedge cloud20.9.1 | 20.9.1.1 | 20.9.2 | 20.9.3 | 20.9.3.1 | 20.9.2.2 | 20.9.2.3 | 20.9.4 | 20.9.5 | 20.9.5.1 | 20.9.6 | 20.9.5.3
  • cisco sd-wan vedge router20.3.1 | 20.3.2 | 20.4.1 | 20.4.1.1 | 20.3.3 | 20.4.1.2 | 20.4.2 | 20.3.4 | 20.3.5 | 20.9.1 | 20.3.6 | 20.9.2 | 20.3.7 | 20.9.3 | 20.3.3.2 | 20.3.4.3 | 20.9.3.1 | 20.3.7.1 | 20.3.5.1 | 20.4.2.3 | 20.9.2.2 | 20.3.7.2 | 20.9.2.3 | 20.9.4 | 20.12.1 | 20.3.8 | 20.9.4.1777 | 20.9.5 | 20.9.5.1 | 20.12.3.1 | 20.9.6 | 20.9.5.3

1 vendor · 2 products

References

1 links