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01 Record

CVE-2025-20143

Cisco IOS XR Software Secure Boot Bypass Vulnerability

MediumPUBLISHEDCNA: cisco
CNA base score6.7 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
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02 Description

Cisco IOS XR Software Secure Boot Bypass Vulnerability

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.11% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 1.2% of scored records. A rank, not a probability.
NVD base score
6.7 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Analyzed. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2025-03-12 16:12Z1 YR AGO
Last updated
2026-02-26 19:09Z8 MO AGO
Reserved
2024-10-10
Assigning CNA
cisco
Record state
PUBLISHED
Severity
Medium (CVSS 6.7)
CNA CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Weaknesses
  • CWE-347Improper Verification of Cryptographic SignatureBase
Data version
5.2
Document digest
f0ded2baa91ab7f5eae1bb0feec2512ee3b77a0a4723820377e42c5e168fd194

05 Affected products

VendorProductVersionsPlatforms
CiscoCisco IOS XR Software6.5.3, 6.5.2, 6.5.92, 6.5.1, 6.5.15, 6.6.2, 7.0.1, 6.6.25, 6.6.1, 6.6.11, 6.5.93, 6.6.12, 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, 6.8.1, 7.4.15, 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, 7.4.2, 7.3.4, 6.7.35, 6.9.1, 7.6.2, 7.8.1, 7.5.3, 7.7.2, 6.9.2, 7.8.2, 7.5.4, 7.8.22, 7.7.21, 7.3.5, 7.5.5, 7.3.6, 7.8.23—

06 References