CVE-2026-38754

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-07-16. 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 — 4 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

A fix is available — apply it.

A heap overflow in the ifsbreakup() function (shell/ash.c) of Busybox v1.38.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted input.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
35%
KEV
Not listed

Published

July 15, 2026

Last Modified

July 22, 2026

Advisory Details (2)

Auto-updated Jul 16, 2026
No patch confirmed yet.
generic

[PATCH] ash: fix out-of-bounds read in ifsbreakup()

https://lists.busybox.net/pipermail/busybox/2026-June/092353.html
generic
https://busybox.com

Vendor Advisories for CVE-2026-38754(3)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatbusybox-main-1.37.0-8.1.hum12026-07-16redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
busybox1:1.30.1-6 ... 1:1.38.0-3 (35 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
busybox1:1.35.0-4 ... 1:1.38.0-3 (28 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
busybox1:1.37.0-10 ... 1:1.38.0-3 (9 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
busybox1:1.37.0-10 ... 1:1.38.0-2 (8 versions)1:1.38.0-3—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 82× 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 256 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Same vendor

1 shown

redhat:RHSA-2026:41130

Frequently asked(5)

What is CVE-2026-38754?
CVE-2026-38754 is a high vulnerability published on July 15, 2026. A heap overflow in the ifsbreakup() function (shell/ash.c) of Busybox v1.38.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted input.
When was CVE-2026-38754 disclosed?
CVE-2026-38754 was first published in the National Vulnerability Database on July 15, 2026, with the most recent update on July 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-38754 actively exploited?
CVE-2026-38754 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 65.4% of all scored CVEs.
What is the CVSS score of CVE-2026-38754?
CVE-2026-38754 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-38754?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-38754, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-38754

Explore →

Is Your Infrastructure Affected by CVE-2026-38754?

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

Start Free Scan →Browse All CVEs