CVE-2025-20143

MEDIUMNVD 6.76.7—
EchelonGraph scoreMEDIUM confidence

Score 6.7 from GitHub Security Advisory published 2025-03-12. NVD baseline CVSS 6.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
6.7
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.7Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A vulnerability in the boot process of Cisco IOS XR Software could allow an authenticated, local attacker with high privileges to bypass the Secure Boot functionality and load unverified 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 insufficient verification of modules in the software load process. An attacker could exploit this vulnerability by manipulating the loaded binaries to bypass some of the integrity checks that are performed during the booting process. A successful exploit could allow the attacker to control the boot configuration, which could enable them to bypass the requirement to run Cisco-signed images or alter the security properties of the running system. Note: This vulnerability affects Cisco IOS XR Software, not the Secure Boot feature. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

CVSS v3
6.7
EG Score
6.7(medium)
EG Risk
30(Track)
EG Risk 30/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity67% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
1.2%
KEV
Not listed

Published

March 12, 2025

Last Modified

July 22, 2025

References (2)

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 6× in last 7d / 32× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-23 02:49 UTCEG score recompute
  2. 2026-07-22 14:07 UTCEPSS rescore
  3. 2026-07-22 14:07 UTCEPSS rescore
  4. 2026-07-21 15:24 UTCEPSS rescore
  5. 2026-07-19 14:30 UTCEPSS rescore
  6. 2026-07-19 14:30 UTCEPSS rescore
  7. 2026-07-16 17:02 UTCEPSS rescore
  8. 2026-07-16 17:02 UTCEPSS rescore
  9. 2026-07-15 16:57 UTCEPSS rescore
  10. 2026-07-15 16:57 UTCEPSS rescore
  11. 2026-07-13 22:29 UTCEPSS rescore
  12. 2026-07-13 22:29 UTCEPSS rescore
  13. 2026-07-13 06:12 UTCEPSS rescore
  14. 2026-07-12 05:46 UTCEPSS rescore
  15. 2026-07-12 05:45 UTCEPSS rescore
  16. 2026-07-09 19:09 UTCEPSS rescore
  17. 2026-07-08 15:14 UTCEPSS rescore
  18. 2026-07-07 13:45 UTCEPSS rescore
  19. 2026-07-05 02:30 UTCEPSS rescore
  20. 2026-07-04 06:30 UTCEPSS rescore
  21. 2026-07-01 15:06 UTCEPSS rescore
  22. 2026-06-30 23:21 UTCEPSS rescore
  23. 2026-06-28 14:07 UTCEPSS rescore
  24. 2026-06-28 14:07 UTCEPSS rescore
  25. 2026-06-28 04:55 UTCEPSS rescore
Show 37 more
  1. 2026-06-27 03:08 UTCEPSS rescore
  2. 2026-06-27 03:08 UTCEPSS rescore
  3. 2026-06-25 13:49 UTCEPSS rescore
  4. 2026-06-25 13:49 UTCEPSS rescore
  5. 2026-06-24 14:04 UTCEPSS rescore
  6. 2026-06-24 14:04 UTCEPSS rescore
  7. 2026-06-23 21:32 UTCEPSS rescore
  8. 2026-06-22 14:25 UTCEPSS rescore
  9. 2026-06-22 14:25 UTCEPSS rescore
  10. 2026-06-21 01:59 UTCEPSS rescore
  11. 2026-06-21 01:59 UTCEPSS rescore
  12. 2026-06-18 17:52 UTCEPSS rescore
  13. 2026-06-18 17:52 UTCEPSS rescore
  14. 2026-06-17 17:52 UTCEPSS rescore
  15. 2026-06-16 17:52 UTCEPSS rescore
  16. 2026-06-15 17:48 UTCEPSS rescore
  17. 2026-06-14 23:17 UTCEPSS rescore
  18. 2026-06-13 22:59 UTCEPSS rescore
  19. 2026-06-13 22:59 UTCEPSS rescore
  20. 2026-06-12 23:11 UTCEPSS rescore
  21. 2026-06-11 13:59 UTCEPSS rescore
  22. 2026-06-10 13:21 UTCEPSS rescore
  23. 2026-06-05 22:46 UTCEPSS rescore
  24. 2026-06-05 22:46 UTCEPSS rescore
  25. 2026-06-05 06:10 UTCEPSS rescore
  26. 2026-06-05 06:10 UTCEPSS rescore
  27. 2026-06-04 13:11 UTCEPSS rescore
  28. 2026-06-04 13:11 UTCEPSS rescore
  29. 2026-06-02 20:12 UTCEPSS rescore
  30. 2026-06-02 20:12 UTCEPSS rescore
  31. 2026-06-01 13:51 UTCEPSS rescore
  32. 2026-06-01 13:51 UTCEPSS rescore
  33. 2026-05-31 00:16 UTCEPSS rescore
  34. 2026-05-31 00:16 UTCEPSS rescore
  35. 2026-05-30 09:38 UTCEG score recompute
  36. 2026-05-30 09:38 UTCGHSA enrichment
  37. 2026-05-29 13:44 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2025-20143?
CVE-2025-20143 is a medium vulnerability published on March 12, 2025. A vulnerability in the boot process of Cisco IOS XR Software could allow an authenticated, local attacker with high privileges to bypass the Secure Boot functionality and load unverified software on an affected device. To exploit this vulnerability, the attacker must have root-system privileges on…
When was CVE-2025-20143 disclosed?
CVE-2025-20143 was first published in the National Vulnerability Database on March 12, 2025, with the most recent update on July 22, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-20143 actively exploited?
CVE-2025-20143 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2025-20143?
CVE-2025-20143 has a CVSS v3 base score of 6.7 (NVD).
How do I remediate CVE-2025-20143?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-20143, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2025-20143

Explore →

Is Your Infrastructure Affected by CVE-2025-20143?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs