CVE-2026-38637

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH 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
Trending — 3 sources updated this week
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.5Exploit: NoneExposed: 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(high)
EPSS
35.8%
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 36× in last 7d / 50× 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. 2026-07-06 22:44 UTCEG score recompute
  2. 2026-07-06 22:44 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 11:14 UTCEG score recompute
  6. 2026-07-06 11:14 UTCGHSA enrichment
  7. 2026-07-06 02:23 UTCEPSS rescore
  8. 2026-07-06 02:23 UTCEPSS rescore
  9. 2026-07-05 23:29 UTCEG score recompute
  10. 2026-07-05 23:29 UTCGHSA enrichment
  11. 2026-07-05 12:00 UTCEG score recompute
  12. 2026-07-05 11:59 UTCGHSA enrichment
  13. 2026-07-05 02:30 UTCEPSS rescore
  14. 2026-07-05 00:30 UTCEG score recompute
  15. 2026-07-05 00:30 UTCGHSA enrichment
  16. 2026-07-04 13:01 UTCEG score recompute
  17. 2026-07-04 13:01 UTCGHSA enrichment
  18. 2026-07-04 06:31 UTCEPSS rescore
  19. 2026-07-04 01:31 UTCEG score recompute
  20. 2026-07-04 01:31 UTCGHSA enrichment
  21. 2026-07-03 14:00 UTCEG score recompute
  22. 2026-07-03 14:00 UTCGHSA enrichment
  23. 2026-07-03 02:29 UTCEG score recompute
  24. 2026-07-03 02:29 UTCGHSA enrichment
  25. 2026-07-02 14:57 UTCEG score recompute
Show 25 more
  1. 2026-07-02 14:57 UTCGHSA enrichment
  2. 2026-07-02 03:28 UTCEG score recompute
  3. 2026-07-02 03:28 UTCGHSA enrichment
  4. 2026-07-01 15:58 UTCEG score recompute
  5. 2026-07-01 15:58 UTCGHSA enrichment
  6. 2026-07-01 15:06 UTCEPSS rescore
  7. 2026-07-01 04:28 UTCEG score recompute
  8. 2026-07-01 04:28 UTCGHSA enrichment
  9. 2026-06-30 23:22 UTCEPSS rescore
  10. 2026-06-30 16:57 UTCEG score recompute
  11. 2026-06-30 16:56 UTCGHSA enrichment
  12. 2026-06-30 05:27 UTCEG score recompute
  13. 2026-06-30 05:26 UTCGHSA enrichment
  14. 2026-06-29 17:56 UTCEG score recompute
  15. 2026-06-29 17:56 UTCGHSA enrichment
  16. 2026-06-29 06:27 UTCEG score recompute
  17. 2026-06-29 06:26 UTCGHSA enrichment
  18. 2026-06-28 18:56 UTCEG score recompute▲ 7.50
  19. 2026-06-28 18:56 UTCGHSA enrichment
  20. 2026-06-28 14:07 UTCEPSS rescore
  21. 2026-06-28 04:56 UTCEPSS rescore
  22. 2026-06-27 03:08 UTCEPSS rescore
  23. 2026-06-26 15:40 UTCNVD updateCVSS v3 → 7.5 · severity → HIGH
  24. 2026-06-25 21:46 UTCEG score recompute
  25. 2026-06-25 21:46 UTCGHSA enrichment

Related CVEs(same CWE)

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 35.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
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.

Dependency Blast Radius

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