CVE-2026-38637

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-06-25. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: None knownExposed: 0

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

An issue in the pthread_rwlockattr_setpshared() function of relibc commit 61f42d allows attackers to cause a Denial of Service (DoS) via a crafted input.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: 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
Severity75% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
48%
KEV
Not listed

Published

June 25, 2026

Last Modified

June 26, 2026

Advisory Details (4)

Auto-updated Jun 26, 2026
No patch confirmed yet.
generic

Reachable expect panic in `pthread_rwlockattr_setpshared` when invalid `pshared` given (#264) · Issues · redox-os / relibc · GitLab

https://gitlab.redox-os.org/redox-os/relibc/-/work_items/264
generic

fix: handle invalid `pshared` in `pthread_rwlockattr_setpshared` (!987) · Merge requests · redox-os / relibc · GitLab

https://gitlab.redox-os.org/redox-os/relibc/-/merge_requests/987
generic

Reachable expect panic in `pthread_rwlockattr_setpshared` when invalid `pshared` given (#264) · Issues · redox-os / relibc · GitLab

https://gitlab.redox-os.org/redox-os/relibc/-/issues/264
generic

pocs/redox/CVE-2026-38637 at master · Marsman1996/pocs · GitHub

https://github.com/Marsman1996/pocs/tree/master/redox/CVE-2026-38637

Vendor Advisories for CVE-2026-38637(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 6× in last 7d / 64× 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 210 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-38637?
CVE-2026-38637 is a high vulnerability published on June 25, 2026. An issue in the pthreadrwlockattrsetpshared() function of relibc commit 61f42d allows attackers to cause a Denial of Service (DoS) via a crafted input.
When was CVE-2026-38637 disclosed?
CVE-2026-38637 was first published in the National Vulnerability Database on June 25, 2026, with the most recent update on June 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-38637 actively exploited?
CVE-2026-38637 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 51.8% of all scored CVEs.
What is the CVSS score of CVE-2026-38637?
CVE-2026-38637 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-38637?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-38637, 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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