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CVE-2025-20248: cisco cisco ios xr software

CVSS: 6.0v3.1MediumAnalyzed
Published 10-09-2025Last modified 26-02-2026
Open JSON

Vulnerability summary

CVE-2025-20248 is a medium (CVSS 6.0) vulnerability in cisco cisco ios xr software. EPSS estimates a 0.10% chance of exploitation in the next 30 days, higher than 0.7% of scored vulnerabilities.

Overall risk
24/100
0100
Low · default modelHow is this calculated?
CVSS score
6.0/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.10%
0%100%
Low · -0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 10-09-2025
    PublishedVulnerability first disclosed.
  2. 26-02-2026
    Last modifiedVulnerability information updated.

Description

A vulnerability in the installation process of Cisco IOS XR Software could allow an authenticated, local attacker to bypass Cisco IOS XR Software image signature verification and load unsigned software on an affected device. To exploit this vulnerability, the attacker must have root-system privileges on the affected device. This vulnerability is due to incomplete validation of files during the installation of an .iso file. An attacker could exploit this vulnerability by modifying contents of the .iso image and then installing and activating it on the device. A successful exploit could allow the attacker to load an unsigned file as part of the image activation process.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.10%

Chance of exploitation in the next 30 days

Percentile

1%

Versus all other CVEs

30-day change

-0.01 pp

From 0.10% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.10%

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 xr software6.5.3 | 6.5.29 | 6.5.1 | 6.6.1 | 6.5.2 | 6.5.92 | 6.5.15 | 6.6.2 | 7.0.1 | 6.6.25 | 6.5.26 | 6.6.11 | 6.5.25 | 6.5.28 | 6.5.93 | 6.6.12 | 6.5.90 | 7.0.0 | 7.1.1 | 7.0.90 | 6.6.3 | 6.7.1 | 7.0.2 | 7.1.15 | 7.2.0 | 7.2.1 | 7.1.2 | 6.7.2 | 7.1.25 | 6.6.4 | 7.3.1 | 7.1.3 | 6.7.3 | 7.4.1 | 7.2.2 | 6.5.31 | 6.8.1 | 7.4.15 | 6.5.32 | 7.3.2 | 7.5.1 | 7.4.16 | 7.3.27 | 7.6.1 | 7.5.2 | 7.6.15 | 7.3.3 | 7.7.1 | 6.8.2 | 7.3.4 | 7.4.2 | 6.7.35 | 6.9.1 | 7.6.2 | 7.8.1 | 7.5.3 | 7.7.2 | 6.9.2 | 7.9.1 | 7.8.2 | 7.5.4 | 6.5.33 | 7.8.22 | 7.10.1 | 7.7.21 | 7.9.2 | 7.3.5 | 7.5.5 | 7.11.1 | 7.9.21 | 7.10.2 | 7.6.3 | 24.1.1 | 7.3.6 | 7.11.2 | 24.2.1 | 24.1.2 | 24.2.11 | 24.3.1 | 24.4.1 | 24.2.2 | 7.8.23 | 7.11.21 | 24.2.20 | 24.3.2 | 24.4.10 | 6.5.35 | 24.4.15 | 6.5.351 | 6.5.352
  • ios_xr6.5.1 | 6.5.2 | 6.5.3 | 6.5.15 | 6.5.25 | 6.5.26 | 6.5.28 | 6.5.29 | 6.5.31 | 6.5.32 | 6.5.33 | 6.5.35 | 6.5.90 | 6.5.92 | 6.5.93 | 6.5.351 | 6.5.352 | 6.6.1 | 6.6.2 | 6.6.3 | 6.6.4 | 6.6.11 | 6.6.12 | 6.6.25 | 6.7.1 | 6.7.2 | 6.7.3 | 6.7.35 | 6.8.1 | 6.8.2 | 6.9.1 | 6.9.2 | 7.0.0 | 7.0.1 | 7.0.2 | 7.0.90 | 7.1.1 | 7.1.2 | 7.1.3 | 7.1.15 | 7.1.25 | 7.2.0 | 7.2.1 | 7.2.2 | 7.3.1 | 7.3.2 | 7.3.3 | 7.3.4 | 7.3.5 | 7.3.6 | 7.3.27 | 7.4.1 | 7.4.2 | 7.4.15 | 7.4.16 | 7.5.1 | 7.5.2 | 7.5.3 | 7.5.4 | 7.5.5 | 7.6.1 | 7.6.2 | 7.6.3 | 7.6.15 | 7.7.1 | 7.7.2 | 7.7.21 | 7.8.1 | 7.8.2 | 7.8.22 | 7.8.23 | 7.9.1 | 7.9.2 | 7.9.21 | 7.10.1 | 7.10.2 | 7.11.1 | 7.11.2 | 7.11.21 | 24.1.1 | 24.1.2 | 24.2.1 | 24.2.2 | 24.2.11 | 24.2.20 | 24.3.1 | 24.3.2 | 24.4.1 | 24.4.10 | 24.4.15

1 vendor · 2 products

References

1 links