CVE-2026-49424

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 Linux waitid() implementation translates a FreeBSD siginfo_t struct into a stack-declared Linux siginfo_t. It did not first zero the stack struct.

An unprivileged user may observe 104 bytes 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-2026-49424(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 / 67× 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 20:23 UTCGHSA enrichment
  2. 2026-09-18 21:46 UTCEG score recompute
  3. 2026-09-18 21:46 UTCGHSA enrichment
  4. 2026-09-18 19:28 UTCEPSS rescore
  5. 2026-09-17 21:34 UTCEG score recompute
  6. 2026-09-17 21:34 UTCGHSA enrichment
  7. 2026-09-16 20:08 UTCEG score recompute
  8. 2026-09-16 20:08 UTCGHSA enrichment
  9. 2026-09-16 14:08 UTCEPSS rescore
  10. 2026-09-16 05:15 UTCEPSS rescore
  11. 2026-09-15 18:51 UTCEG score recompute
  12. 2026-09-15 18:51 UTCGHSA enrichment
  13. 2026-09-14 19:29 UTCGHSA enrichment
  14. 2026-09-13 20:52 UTCEG score recompute
  15. 2026-09-13 20:52 UTCGHSA enrichment
  16. 2026-09-13 16:47 UTCEPSS rescore
  17. 2026-09-12 22:15 UTCEG score recompute
  18. 2026-09-12 22:15 UTCGHSA enrichment
  19. 2026-09-11 23:37 UTCEG score recompute
  20. 2026-09-11 23:36 UTCGHSA enrichment
  21. 2026-09-11 14:53 UTCEPSS rescore
  22. 2026-09-11 00:27 UTCEG score recompute
  23. 2026-09-11 00:27 UTCGHSA enrichment
  24. 2026-09-10 09:35 UTCEPSS rescore
  25. 2026-09-10 01:22 UTCGHSA enrichment
Show 47 more
  1. 2026-09-09 02:43 UTCEG score recompute
  2. 2026-09-09 02:43 UTCGHSA enrichment
  3. 2026-09-08 22:01 UTCEPSS rescore
  4. 2026-09-07 10:08 UTCEG score recompute
  5. 2026-09-07 10:07 UTCGHSA enrichment
  6. 2026-09-06 13:47 UTCEPSS rescore
  7. 2026-09-06 11:26 UTCEG score recompute
  8. 2026-09-06 11:26 UTCGHSA enrichment
  9. 2026-09-05 12:50 UTCGHSA enrichment
  10. 2026-09-04 14:07 UTCEG score recompute
  11. 2026-09-04 14:07 UTCGHSA enrichment
  12. 2026-09-04 05:06 UTCEPSS rescore
  13. 2026-09-03 15:27 UTCGHSA enrichment
  14. 2026-09-02 16:46 UTCGHSA enrichment
  15. 2026-09-01 17:54 UTCEG score recompute
  16. 2026-09-01 17:54 UTCGHSA enrichment
  17. 2026-09-01 13:54 UTCEPSS rescore
  18. 2026-09-01 04:40 UTCEPSS rescore
  19. 2026-08-31 19:14 UTCGHSA enrichment
  20. 2026-08-30 23:48 UTCEG score recompute
  21. 2026-08-30 23:48 UTCGHSA enrichment
  22. 2026-08-30 19:17 UTCEPSS rescore
  23. 2026-08-30 01:22 UTCEPSS rescore
  24. 2026-08-30 01:10 UTCGHSA enrichment
  25. 2026-08-29 02:32 UTCEG score recompute
  26. 2026-08-29 02:31 UTCGHSA enrichment
  27. 2026-08-28 21:41 UTCEPSS rescore
  28. 2026-08-27 19:13 UTCEG score recompute
  29. 2026-08-27 19:12 UTCGHSA enrichment
  30. 2026-08-27 14:25 UTCEPSS rescore
  31. 2026-08-26 18:24 UTCGHSA enrichment
  32. 2026-08-26 18:02 UTCEG score recompute 5.50
  33. 2026-08-26 18:02 UTCGHSA enrichment
  34. 2026-08-26 18:01 UTCMITRE cvelistV5CVSS v3 → 5.5 · severity → MEDIUM
  35. 2026-08-26 17:13 UTCGHSA enrichment
  36. 2026-08-26 14:46 UTCEPSS rescore
  37. 2026-08-25 13:49 UTCEPSS rescore
  38. 2026-08-24 18:50 UTCGHSA enrichment
  39. 2026-08-23 00:19 UTCEPSS rescore
  40. 2026-08-22 01:36 UTCEG score recompute
  41. 2026-08-22 01:35 UTCGHSA enrichment
  42. 2026-08-21 23:49 UTCEPSS rescore
  43. 2026-08-20 22:55 UTCEPSS rescore
  44. 2026-08-19 17:04 UTCEPSS rescore
  45. 2026-08-19 08:20 UTCNVD update
  46. 2026-08-19 07:28 UTCEG score recompute
  47. 2026-08-19 07:27 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-49424?
CVE-2026-49424 is a medium vulnerability published on August 19, 2026. The Linux waitid() implementation translates a FreeBSD siginfot struct into a stack-declared Linux siginfot. It did not first zero the stack struct. An unprivileged user may observe 104 bytes of uninitialized kernel stack data, which may contain sensitive information.
When was CVE-2026-49424 disclosed?
CVE-2026-49424 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-2026-49424 actively exploited?
CVE-2026-49424 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-2026-49424?
CVE-2026-49424 has a CVSS v3.1 base score of 5.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-49424?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-49424, 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-2026-49424

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