CVE-2026-38753

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-07-15. 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 use-after-free in the awk_sub() function (editors/awk.c) of Busybox v1.38.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted AWK script.

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
16%
KEV
Not listed

Published

July 15, 2026

Last Modified

July 20, 2026

Advisory Details (2)

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

[PATCH] awk: fix use-after-free in awk_sub()

https://lists.busybox.net/pipermail/busybox/2026-June/092352.html
generic
http://busybox.com

Vendor Advisories for CVE-2026-38753(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(1)

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

Data Freshness Timeline

(refreshed 32× in last 7d / 148× 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 198 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-38753?
CVE-2026-38753 is a high vulnerability published on July 15, 2026. A use-after-free in the awk_sub() function (editors/awk.c) of Busybox v1.38.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted AWK script.
When was CVE-2026-38753 disclosed?
CVE-2026-38753 was first published in the National Vulnerability Database on July 15, 2026, with the most recent update on July 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-38753 actively exploited?
CVE-2026-38753 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 84.3% of all scored CVEs.
What is the CVSS score of CVE-2026-38753?
CVE-2026-38753 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-38753?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-38753, 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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