CVE-2025-20766

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2025-12-02. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.8Exploit: NoneExposed: 0

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

In display, there is a possible memory corruption due to improper input validation. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10196993; Issue ID: MSV-4820.

CVSS v3
7.8
EG Score
7.8(medium)
EPSS
0.1%
KEV
Not listed

Published

December 2, 2025

Last Modified

December 3, 2025

References (1)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 23× 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. 2026-07-21 15:24 UTCEPSS rescore
  2. 2026-07-19 14:30 UTCEPSS rescore
  3. 2026-07-19 14:30 UTCEPSS rescore
  4. 2026-07-18 10:03 UTCEPSS rescore
  5. 2026-07-16 17:02 UTCEPSS rescore
  6. 2026-07-16 17:02 UTCEPSS rescore
  7. 2026-07-13 06:12 UTCEPSS rescore
  8. 2026-07-12 05:46 UTCEPSS rescore
  9. 2026-07-12 05:45 UTCEPSS rescore
  10. 2026-07-11 08:26 UTCEPSS rescore
  11. 2026-07-11 08:26 UTCEPSS rescore
  12. 2026-07-08 15:14 UTCEPSS rescore
  13. 2026-07-07 13:45 UTCEPSS rescore
  14. 2026-07-06 16:26 UTCEPSS rescore
  15. 2026-07-06 02:22 UTCEPSS rescore
  16. 2026-07-06 02:22 UTCEPSS rescore
  17. 2026-07-04 06:30 UTCEPSS rescore
  18. 2026-07-01 15:06 UTCEPSS rescore
  19. 2026-06-28 14:07 UTCEPSS rescore
  20. 2026-06-28 14:07 UTCEPSS rescore
  21. 2026-06-27 03:08 UTCEPSS rescore
  22. 2026-06-27 03:08 UTCEPSS rescore
  23. 2026-06-23 21:32 UTCEPSS rescore
  24. 2026-06-18 17:52 UTCEPSS rescore
  25. 2026-06-18 17:52 UTCEPSS rescore
Show 31 more
  1. 2026-06-17 17:52 UTCEPSS rescore
  2. 2026-06-15 17:48 UTCEPSS rescore
  3. 2026-06-14 23:17 UTCEPSS rescore
  4. 2026-06-13 22:59 UTCEPSS rescore
  5. 2026-06-13 22:59 UTCEPSS rescore
  6. 2026-06-12 23:11 UTCEPSS rescore
  7. 2026-06-11 13:59 UTCEPSS rescore
  8. 2026-06-10 22:18 UTCEPSS rescore
  9. 2026-06-10 13:21 UTCEPSS rescore
  10. 2026-06-08 14:16 UTCEPSS rescore
  11. 2026-06-08 14:16 UTCEPSS rescore
  12. 2026-06-07 15:24 UTCEPSS rescore
  13. 2026-06-06 13:47 UTCEPSS rescore
  14. 2026-06-06 13:47 UTCEPSS rescore
  15. 2026-06-05 22:46 UTCEPSS rescore
  16. 2026-06-05 22:46 UTCEPSS rescore
  17. 2026-06-05 06:10 UTCEPSS rescore
  18. 2026-06-05 06:10 UTCEPSS rescore
  19. 2026-06-04 13:11 UTCEPSS rescore
  20. 2026-06-04 13:11 UTCEPSS rescore
  21. 2026-06-02 20:12 UTCEPSS rescore
  22. 2026-06-02 20:12 UTCEPSS rescore
  23. 2026-06-01 13:51 UTCEPSS rescore
  24. 2026-06-01 13:51 UTCEPSS rescore
  25. 2026-05-31 22:30 UTCEPSS rescore
  26. 2026-05-31 22:30 UTCEPSS rescore
  27. 2026-05-31 00:16 UTCEPSS rescore
  28. 2026-05-31 00:16 UTCEPSS rescore
  29. 2026-05-29 18:37 UTCEG score recompute
  30. 2026-05-29 18:36 UTCGHSA enrichment
  31. 2026-05-29 13:44 UTCEPSS rescore

Frequently asked(5)

What is CVE-2025-20766?
CVE-2025-20766 is a high vulnerability published on December 2, 2025. In display, there is a possible memory corruption due to improper input validation. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10196993; Issue ID: MSV-4820.
When was CVE-2025-20766 disclosed?
CVE-2025-20766 was first published in the National Vulnerability Database on December 2, 2025, with the most recent update on December 3, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-20766 actively exploited?
CVE-2025-20766 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2025-20766?
CVE-2025-20766 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2025-20766?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-20766, 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.

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