CVE-2026-49425

MEDIUMPre-NVD 5.55.5
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-08-19. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

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

The compat32 kevent() handler translates a 64-bit kevent struct into a stack- declared 32-bit struct. It did not first zero the stack struct.

An unprivileged user may observe a small amount of uninitialized kernel stack data, which may contain sensitive information.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
25(Track)
EG Risk 25/100SSVC: 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
Severity55% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

August 19, 2026

Last Modified

August 31, 2026

Advisory Details (1)

Auto-updated Aug 26, 2026
No patch confirmed yet.

Vendor Advisories for CVE-2026-49425(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 17× in last 7d / 65× 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. 2026-09-19 21:07 UTCEG score recompute
  2. 2026-09-19 21:07 UTCGHSA enrichment
  3. 2026-09-18 21:46 UTCEG score recompute
  4. 2026-09-18 21:46 UTCGHSA enrichment
  5. 2026-09-18 19:28 UTCEPSS rescore
  6. 2026-09-17 21:34 UTCEG score recompute
  7. 2026-09-17 21:34 UTCGHSA enrichment
  8. 2026-09-16 21:48 UTCEG score recompute
  9. 2026-09-16 21:48 UTCGHSA enrichment
  10. 2026-09-16 14:08 UTCEPSS rescore
  11. 2026-09-16 05:15 UTCEPSS rescore
  12. 2026-09-15 21:27 UTCEG score recompute
  13. 2026-09-15 21:27 UTCGHSA enrichment
  14. 2026-09-14 22:15 UTCGHSA enrichment
  15. 2026-09-13 22:47 UTCEG score recompute
  16. 2026-09-13 22:47 UTCGHSA enrichment
  17. 2026-09-13 16:47 UTCEPSS rescore
  18. 2026-09-12 23:34 UTCEG score recompute
  19. 2026-09-12 23:34 UTCGHSA enrichment
  20. 2026-09-12 00:21 UTCEG score recompute
  21. 2026-09-12 00:21 UTCGHSA enrichment
  22. 2026-09-11 14:53 UTCEPSS rescore
  23. 2026-09-11 01:09 UTCEG score recompute
  24. 2026-09-11 01:09 UTCGHSA enrichment
  25. 2026-09-10 09:35 UTCEPSS rescore
Show 45 more
  1. 2026-09-10 01:55 UTCGHSA enrichment
  2. 2026-09-09 02:43 UTCEG score recompute
  3. 2026-09-09 02:43 UTCGHSA enrichment
  4. 2026-09-08 22:01 UTCEPSS rescore
  5. 2026-09-07 18:54 UTCGHSA enrichment
  6. 2026-09-06 19:42 UTCEG score recompute
  7. 2026-09-06 19:42 UTCGHSA enrichment
  8. 2026-09-06 13:47 UTCEPSS rescore
  9. 2026-09-05 20:29 UTCEG score recompute
  10. 2026-09-05 20:29 UTCGHSA enrichment
  11. 2026-09-04 21:17 UTCEG score recompute
  12. 2026-09-04 21:17 UTCGHSA enrichment
  13. 2026-09-03 20:37 UTCGHSA enrichment
  14. 2026-09-02 21:22 UTCGHSA enrichment
  15. 2026-09-01 18:30 UTCEG score recompute
  16. 2026-09-01 18:30 UTCGHSA enrichment
  17. 2026-09-01 13:54 UTCEPSS rescore
  18. 2026-08-31 19:14 UTCGHSA enrichment
  19. 2026-08-31 00:56 UTCEG score recompute
  20. 2026-08-31 00:56 UTCGHSA enrichment
  21. 2026-08-30 19:17 UTCEPSS rescore
  22. 2026-08-30 01:44 UTCGHSA enrichment
  23. 2026-08-29 02:32 UTCEG score recompute
  24. 2026-08-29 02:31 UTCGHSA enrichment
  25. 2026-08-28 21:41 UTCEPSS rescore
  26. 2026-08-27 19:12 UTCEG score recompute
  27. 2026-08-27 19:12 UTCGHSA enrichment
  28. 2026-08-27 14:25 UTCEPSS rescore
  29. 2026-08-26 18:24 UTCGHSA enrichment
  30. 2026-08-26 18:02 UTCEG score recompute 5.50
  31. 2026-08-26 18:02 UTCGHSA enrichment
  32. 2026-08-26 18:01 UTCMITRE cvelistV5CVSS v3 → 5.5 · severity → MEDIUM
  33. 2026-08-26 17:13 UTCGHSA enrichment
  34. 2026-08-26 14:46 UTCEPSS rescore
  35. 2026-08-25 21:42 UTCGHSA enrichment
  36. 2026-08-25 13:49 UTCEPSS rescore
  37. 2026-08-23 00:19 UTCEPSS rescore
  38. 2026-08-22 14:52 UTCEG score recompute
  39. 2026-08-22 14:52 UTCGHSA enrichment
  40. 2026-08-21 23:49 UTCEPSS rescore
  41. 2026-08-20 22:55 UTCEPSS rescore
  42. 2026-08-19 17:04 UTCEPSS rescore
  43. 2026-08-19 08:20 UTCNVD update
  44. 2026-08-19 07:28 UTCEG score recompute
  45. 2026-08-19 07:27 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-49425?
CVE-2026-49425 is a medium vulnerability published on August 19, 2026. The compat32 kevent() handler translates a 64-bit kevent struct into a stack- declared 32-bit struct. It did not first zero the stack struct. An unprivileged user may observe a small amount of uninitialized kernel stack data, which may contain sensitive information.
When was CVE-2026-49425 disclosed?
CVE-2026-49425 was first published in the National Vulnerability Database on August 19, 2026, with the most recent update on August 31, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-49425 actively exploited?
CVE-2026-49425 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 98.4% of all scored CVEs.
What is the CVSS score of CVE-2026-49425?
CVE-2026-49425 has a CVSS v3.1 base score of 5.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-49425?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-49425, 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-2026-49425

Explore →

Is Your Infrastructure Affected by CVE-2026-49425?

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