9.1

CVE-2025-20221: cisco cisco ios xe software

CVSS: 9.1v3.1CriticalAnalyzed
Published 07-05-2025Last modified 07-05-2025
Open JSON

Vulnerability summary

CVE-2025-20221 is a critical (CVSS 9.1) vulnerability in cisco cisco ios xe software. EPSS estimates a 0.52% chance of exploitation in the next 30 days, higher than 43.3% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.1/10
010
Critical · v3.1 (NVD)
EPSS score
0.52%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 07-05-2025
    PublishedVulnerability first disclosed.
  2. 07-05-2025
    Last modifiedVulnerability information updated.

Description

A vulnerability in the packet filtering features of Cisco IOS XE SD-WAN Software could allow an unauthenticated, remote attacker to bypass Layer 3 and Layer 4 traffic filters. This vulnerability is due to improper traffic filtering conditions on an affected device. An attacker could exploit this vulnerability by sending a crafted packet to the affected device. A successful exploit could allow the attacker to bypass the Layer 3 and Layer 4 traffic filters and inject a crafted packet into the network.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.52%

Chance of exploitation in the next 30 days

Percentile

43%

Versus all other CVEs

30-day change

+0.02 pp

From 0.50% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.52%

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 ios xe software16.12.13 | 17.1.1 | 17.1.1s | 17.1.1t | 17.1.3 | 17.2.1 | 17.2.1r | 17.2.1a | 17.2.1v | 17.2.2 | 17.2.3 | 17.3.1 | 17.3.2 | 17.3.3 | 17.3.1a | 17.3.2a | 17.3.4 | 17.3.5 | 17.3.4a | 17.3.6 | 17.3.7 | 17.3.8 | 17.3.8a | 17.4.1 | 17.4.2 | 17.4.1a | 17.4.1b | 17.5.1 | 17.5.1a | 17.6.1 | 17.6.2 | 17.6.1a | 17.6.3 | 17.6.1y | 17.6.3a | 17.6.4 | 17.6.5 | 17.6.6 | 17.6.6a | 17.6.5a | 17.6.7 | 17.6.8 | 17.6.8a | 17.7.1 | 17.7.1a | 17.7.2 | 17.10.1 | 17.10.1a | 17.10.1b | 17.8.1 | 17.8.1a | 17.9.1 | 17.9.2 | 17.9.1a | 17.9.3 | 17.9.2a | 17.9.3a | 17.9.4 | 17.9.5 | 17.9.4a | 17.9.5a | 17.9.5b | 17.9.6 | 17.9.6a | 17.9.5e | 17.9.5f | 17.11.1 | 17.11.1a | 17.12.1 | 17.12.1a | 17.12.2 | 17.12.3 | 17.12.4 | 17.12.3a | 17.12.1z2 | 17.12.4a | 17.12.4b | 17.13.1 | 17.13.1a | 17.14.1 | 17.14.1a | 17.15.1 | 17.15.1a | 17.15.2 | 17.15.1x | 17.15.2c | 17.15.2b | 17.16.1 | 17.16.1a
  • ios_xe16.12.13 | 17.1.1 | 17.1.1s | 17.1.1t | 17.1.3 | 17.2.1 | 17.2.1a | 17.2.1r | 17.2.1v | 17.2.2 | 17.2.3 | 17.3.1 | 17.3.1a | 17.3.2 | 17.3.2a | 17.3.3 | 17.3.4 | 17.3.4a | 17.3.5 | 17.3.6 | 17.3.7 | 17.3.8 | 17.3.8a | 17.4.1 | 17.4.1a | 17.4.1b | 17.4.2 | 17.5.1 | 17.5.1a | 17.6.1 | 17.6.1a | 17.6.1y | 17.6.2 | 17.6.3 | 17.6.3a | 17.6.4 | 17.6.5 | 17.6.5a | 17.6.6 | 17.6.6a | 17.6.7 | 17.6.8 | 17.6.8a | 17.7.1 | 17.7.1a | 17.7.2 | 17.8.1 | 17.8.1a | 17.9.1 | 17.9.1a | 17.9.2 | 17.9.2a | 17.9.3 | 17.9.3a | 17.9.4 | 17.9.4a | 17.9.5 | 17.9.5a | 17.9.5b | 17.9.5e | 17.9.5f | 17.9.6 | 17.9.6a | 17.10.1 | 17.10.1a | 17.10.1b | 17.11.1 | 17.11.1a | 17.12.1 | 17.12.1a | 17.12.1z2 | 17.12.2 | 17.12.3 | 17.12.3a | 17.12.4 | 17.12.4a | 17.12.4b | 17.13.1 | 17.13.1a | 17.14.1 | 17.14.1a | 17.15.1 | 17.15.1a | 17.15.1x | 17.15.2 | 17.15.2b | 17.15.2c | 17.16.1 | 17.16.1a

1 vendor · 2 products

References

1 links