CVE-2025-51677

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-17. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
9.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.1Exploit: None knownExposed: 0

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

An issue was discovered in openRISC OR1200 commit 83ac6b. An output mismatch between the RTL and the netlist of the or1200 cpu output port can lead to unexpected behavior.

CVSS v3
9.1
EG Score
9.1(medium)
EG Risk
56(Track)
EG Risk 56/100SSVC: 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
Severity91% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
48%
KEV
Not listed

Published

July 17, 2026

Last Modified

July 23, 2026

Advisory Details (3)

Auto-updated Sep 7, 2026
No patch confirmed yet.
generic

[2504.18812] SynFuzz: Leveraging Fuzzing of Netlist to Detect Synthesis Bugs

https://www.arxiv.org/abs/2504.18812
generic

SynFuzz CVE

https://mason.gmu.edu/~rsaravan/projects/synfuzz/cve/cve.html
generic

Synthesis Bugs in the LSU · Issue #160 · openrisc/mor1kx · GitHub

https://github.com/openrisc/mor1kx/issues/160#issuecomment-2585618940

Vendor Advisories for CVE-2025-51677(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 16× in last 7d / 150× 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.

Showing the most recent 100 of 321 total refreshes for this CVE.

  1. 2026-09-11 14:52 UTCEPSS rescore
  2. 2026-09-11 09:36 UTCEPSS rescore
  3. 2026-09-10 09:34 UTCEPSS rescore
  4. 2026-09-08 21:59 UTCEPSS rescore
  5. 2026-09-08 00:23 UTCEG score recompute
  6. 2026-09-08 00:23 UTCGHSA enrichment
  7. 2026-09-07 16:00 UTCEPSS rescore
  8. 2026-09-06 17:40 UTCEG score recompute
  9. 2026-09-06 17:40 UTCGHSA enrichment
  10. 2026-09-06 13:47 UTCEPSS rescore
  11. 2026-09-06 13:24 UTCGHSA enrichment
  12. 2026-09-06 04:31 UTCGHSA enrichment
  13. 2026-09-06 00:30 UTCGHSA enrichment
  14. 2026-09-05 20:30 UTCEG score recompute
  15. 2026-09-05 20:29 UTCGHSA enrichment
  16. 2026-09-05 15:28 UTCEPSS rescore
  17. 2026-09-04 05:06 UTCEPSS rescore
  18. 2026-09-02 14:11 UTCEPSS rescore
  19. 2026-09-01 13:53 UTCEPSS rescore
  20. 2026-09-01 04:38 UTCEPSS rescore
  21. 2026-08-31 03:39 UTCGHSA enrichment
  22. 2026-08-30 23:27 UTCGHSA enrichment
  23. 2026-08-30 19:35 UTCEG score recompute
  24. 2026-08-30 19:35 UTCGHSA enrichment
  25. 2026-08-30 19:16 UTCEPSS rescore
Show 75 more
  1. 2026-08-30 15:52 UTCGHSA enrichment
  2. 2026-08-30 11:08 UTCGHSA enrichment
  3. 2026-08-30 07:17 UTCGHSA enrichment
  4. 2026-08-30 03:27 UTCEG score recompute
  5. 2026-08-30 03:27 UTCGHSA enrichment
  6. 2026-08-30 01:21 UTCEPSS rescore
  7. 2026-08-28 21:40 UTCEPSS rescore
  8. 2026-08-28 01:49 UTCGHSA enrichment
  9. 2026-08-27 21:26 UTCEG score recompute
  10. 2026-08-27 21:26 UTCGHSA enrichment
  11. 2026-08-27 14:24 UTCEPSS rescore
  12. 2026-08-27 12:23 UTCGHSA enrichment
  13. 2026-08-27 02:26 UTCGHSA enrichment
  14. 2026-08-26 22:44 UTCEG score recompute
  15. 2026-08-26 22:44 UTCGHSA enrichment
  16. 2026-08-26 14:45 UTCEPSS rescore
  17. 2026-08-26 11:57 UTCGHSA enrichment
  18. 2026-08-26 07:28 UTCGHSA enrichment
  19. 2026-08-26 02:33 UTCGHSA enrichment
  20. 2026-08-25 22:49 UTCGHSA enrichment
  21. 2026-08-25 18:53 UTCGHSA enrichment
  22. 2026-08-25 14:33 UTCEG score recompute
  23. 2026-08-25 14:33 UTCGHSA enrichment
  24. 2026-08-25 13:48 UTCEPSS rescore
  25. 2026-08-25 10:29 UTCGHSA enrichment
  26. 2026-08-25 06:46 UTCGHSA enrichment
  27. 2026-08-25 02:44 UTCGHSA enrichment
  28. 2026-08-24 23:00 UTCGHSA enrichment
  29. 2026-08-24 19:17 UTCGHSA enrichment
  30. 2026-08-24 15:21 UTCEG score recompute
  31. 2026-08-24 15:21 UTCGHSA enrichment
  32. 2026-08-24 14:16 UTCEPSS rescore
  33. 2026-08-24 11:37 UTCEG score recompute
  34. 2026-08-24 11:37 UTCGHSA enrichment
  35. 2026-08-24 09:22 UTCEPSS rescore
  36. 2026-08-24 07:54 UTCGHSA enrichment
  37. 2026-08-24 03:45 UTCGHSA enrichment
  38. 2026-08-23 22:02 UTCGHSA enrichment
  39. 2026-08-23 18:18 UTCGHSA enrichment
  40. 2026-08-23 14:35 UTCGHSA enrichment
  41. 2026-08-23 10:51 UTCGHSA enrichment
  42. 2026-08-23 07:08 UTCGHSA enrichment
  43. 2026-08-23 03:25 UTCEG score recompute
  44. 2026-08-23 03:25 UTCGHSA enrichment
  45. 2026-08-23 00:18 UTCEPSS rescore
  46. 2026-08-22 23:42 UTCGHSA enrichment
  47. 2026-08-22 19:59 UTCGHSA enrichment
  48. 2026-08-22 16:16 UTCGHSA enrichment
  49. 2026-08-22 12:21 UTCGHSA enrichment
  50. 2026-08-22 08:37 UTCGHSA enrichment
  51. 2026-08-22 04:54 UTCGHSA enrichment
  52. 2026-08-22 01:11 UTCEG score recompute
  53. 2026-08-22 01:11 UTCGHSA enrichment
  54. 2026-08-21 23:48 UTCEPSS rescore
  55. 2026-08-21 21:28 UTCGHSA enrichment
  56. 2026-08-21 17:45 UTCGHSA enrichment
  57. 2026-08-21 14:02 UTCGHSA enrichment
  58. 2026-08-21 09:45 UTCGHSA enrichment
  59. 2026-08-21 06:02 UTCGHSA enrichment
  60. 2026-08-21 02:19 UTCEG score recompute
  61. 2026-08-21 02:19 UTCGHSA enrichment
  62. 2026-08-20 22:54 UTCEPSS rescore
  63. 2026-08-20 22:35 UTCGHSA enrichment
  64. 2026-08-20 18:52 UTCGHSA enrichment
  65. 2026-08-20 15:09 UTCGHSA enrichment
  66. 2026-08-20 11:06 UTCGHSA enrichment
  67. 2026-08-20 07:20 UTCGHSA enrichment
  68. 2026-08-20 03:37 UTCGHSA enrichment
  69. 2026-08-19 23:49 UTCEG score recompute
  70. 2026-08-19 23:49 UTCGHSA enrichment
  71. 2026-08-19 17:03 UTCEPSS rescore
  72. 2026-08-19 15:22 UTCGHSA enrichment
  73. 2026-08-19 11:22 UTCGHSA enrichment
  74. 2026-08-19 07:39 UTCGHSA enrichment
  75. 2026-08-19 03:52 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2025-51677?
CVE-2025-51677 is a critical vulnerability published on July 17, 2026. An issue was discovered in openRISC OR1200 commit 83ac6b. An output mismatch between the RTL and the netlist of the or1200 cpu output port can lead to unexpected behavior.
When was CVE-2025-51677 disclosed?
CVE-2025-51677 was first published in the National Vulnerability Database on July 17, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-51677 actively exploited?
CVE-2025-51677 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 52.0% of all scored CVEs.
What is the CVSS score of CVE-2025-51677?
CVE-2025-51677 has a CVSS v3.1 base score of 9.1 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2025-51677?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-51677, 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-2025-51677

Explore →

Is Your Infrastructure Affected by CVE-2025-51677?

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

Start Free Scan →Browse All CVEs