CVE-2026-40469

CRITICALNVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

Score 9.1 from GitHub Security Advisory published 2026-07-13. NVD baseline CVSS 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
9.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.1Exploit: None knownExposed: 0

A fix is available — apply it.

Integer overflow vulnerability has been found in "builtin.c" program file of gawk (do_sub() routine). This issue could be used to overwrite gawk heap metadata and objects causing the program to crash. It affects 32-bit builds of gawk in versions 5.4.0 and below.

CVSS v3
9.1
EG Score
9.1(medium)
EG Risk
41(Track)
EG Risk 41/100SSVC: 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
Severity91% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
29%
KEV
Not listed

Published

July 13, 2026

Last Modified

July 14, 2026

Advisory Details (2)

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

Merge branch 'gawk-5.4-stable' - gawk.git - gawk

https://cgit.git.savannah.gnu.org/cgit/gawk.git/commit/?id=ae1b2d508f46913269a9e62aceda3636afe8147b
generic

Vulnerabilities in GNU gawk software | CERT Polska

https://cert.pl/en/posts/2026/07/CVE-2026-40467

Vendor Advisories for CVE-2026-40469(4)

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

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntugawk (1:5.3.2-1ubuntu1.1) @ resolute2026-09-18ubuntu
redhatgawk-main-5.4.1-1.hum12026-08-03redhat
redhatgawk-main-5.4.0-3.1.hum12026-07-15redhat

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
gawk1:5.1.0-1, 1:5.2.1-1, 1:5.2.1-2, 1:5.3.2-1——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
gawk1:5.2.1-2, 1:5.3.2-1——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
gawk1:5.2.1-2, 1:5.3.2-1——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
gawk1:5.2.1-2, 1:5.3.2-1——

Weakness Classification(1)

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

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 12× in last 7d / 129× 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 513 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 10:06 UTCVendor advisory
  5. 2026-09-18 10:06 UTCGHSA enrichment
  6. 2026-09-18 05:02 UTCEG score recompute
  7. 2026-09-18 05:02 UTCVendor advisory
  8. 2026-09-18 05:02 UTCGHSA enrichment
  9. 2026-09-17 19:30 UTCEPSS rescore
  10. 2026-09-16 14:08 UTCEPSS rescore
  11. 2026-09-16 05:15 UTCEPSS rescore
  12. 2026-09-15 03:11 UTCEPSS rescore
  13. 2026-09-14 08:05 UTCVendor advisory
  14. 2026-09-14 08:05 UTCGHSA enrichment
  15. 2026-09-14 03:48 UTCVendor advisory
  16. 2026-09-14 03:48 UTCGHSA enrichment
  17. 2026-09-13 23:32 UTCEG score recompute
  18. 2026-09-13 23:32 UTCVendor advisory
  19. 2026-09-13 23:32 UTCGHSA enrichment
  20. 2026-09-13 16:47 UTCEPSS rescore
  21. 2026-09-13 16:39 UTCVendor advisory
  22. 2026-09-13 16:39 UTCGHSA enrichment
  23. 2026-09-13 12:16 UTCVendor advisory
  24. 2026-09-13 12:16 UTCGHSA enrichment
  25. 2026-09-13 08:00 UTCEG score recompute
Show 75 more
  1. 2026-09-13 08:00 UTCVendor advisory
  2. 2026-09-13 08:00 UTCGHSA enrichment
  3. 2026-09-12 15:01 UTCEPSS rescore
  4. 2026-09-12 13:27 UTCVendor advisory
  5. 2026-09-12 13:27 UTCGHSA enrichment
  6. 2026-09-12 01:52 UTCEG score recompute
  7. 2026-09-12 01:52 UTCVendor advisory
  8. 2026-09-12 01:52 UTCGHSA enrichment
  9. 2026-09-11 14:53 UTCEPSS rescore
  10. 2026-09-11 09:37 UTCEPSS rescore
  11. 2026-09-10 09:34 UTCEPSS rescore
  12. 2026-09-08 22:00 UTCEPSS rescore
  13. 2026-09-08 01:57 UTCEG score recompute
  14. 2026-09-08 01:57 UTCVendor advisory
  15. 2026-09-08 01:57 UTCGHSA enrichment
  16. 2026-09-07 16:01 UTCEPSS rescore
  17. 2026-09-06 13:50 UTCEG score recompute
  18. 2026-09-06 13:50 UTCVendor advisory
  19. 2026-09-06 13:50 UTCGHSA enrichment
  20. 2026-09-06 13:47 UTCEPSS rescore
  21. 2026-09-06 01:45 UTCVendor advisory
  22. 2026-09-06 01:45 UTCGHSA enrichment
  23. 2026-09-05 21:25 UTCEG score recompute
  24. 2026-09-05 21:25 UTCVendor advisory
  25. 2026-09-05 21:25 UTCGHSA enrichment
  26. 2026-09-04 05:06 UTCEPSS rescore
  27. 2026-09-02 14:12 UTCEPSS rescore
  28. 2026-09-01 13:53 UTCEPSS rescore
  29. 2026-09-01 04:39 UTCEPSS rescore
  30. 2026-08-31 00:59 UTCVendor advisory
  31. 2026-08-31 00:59 UTCGHSA enrichment
  32. 2026-08-30 20:43 UTCEG score recompute
  33. 2026-08-30 20:43 UTCVendor advisory
  34. 2026-08-30 20:43 UTCGHSA enrichment
  35. 2026-08-30 19:17 UTCEPSS rescore
  36. 2026-08-30 16:27 UTCVendor advisory
  37. 2026-08-30 16:27 UTCGHSA enrichment
  38. 2026-08-30 10:59 UTCVendor advisory
  39. 2026-08-30 10:59 UTCGHSA enrichment
  40. 2026-08-30 05:29 UTCEG score recompute
  41. 2026-08-30 05:29 UTCVendor advisory
  42. 2026-08-30 05:29 UTCGHSA enrichment
  43. 2026-08-30 01:22 UTCEPSS rescore
  44. 2026-08-28 21:41 UTCEPSS rescore
  45. 2026-08-28 02:32 UTCVendor advisory
  46. 2026-08-28 02:32 UTCGHSA enrichment
  47. 2026-08-27 21:36 UTCEG score recompute
  48. 2026-08-27 21:36 UTCVendor advisory
  49. 2026-08-27 21:36 UTCGHSA enrichment
  50. 2026-08-27 14:25 UTCEPSS rescore
  51. 2026-08-27 14:01 UTCVendor advisory
  52. 2026-08-27 14:01 UTCGHSA enrichment
  53. 2026-08-27 00:15 UTCEG score recompute
  54. 2026-08-27 00:15 UTCVendor advisory
  55. 2026-08-27 00:14 UTCGHSA enrichment
  56. 2026-08-26 14:46 UTCEPSS rescore
  57. 2026-08-26 12:51 UTCVendor advisory
  58. 2026-08-26 12:51 UTCGHSA enrichment
  59. 2026-08-26 07:58 UTCVendor advisory
  60. 2026-08-26 07:58 UTCGHSA enrichment
  61. 2026-08-26 02:23 UTCVendor advisory
  62. 2026-08-26 02:23 UTCGHSA enrichment
  63. 2026-08-25 19:17 UTCVendor advisory
  64. 2026-08-25 19:17 UTCGHSA enrichment
  65. 2026-08-25 13:55 UTCEG score recompute
  66. 2026-08-25 13:55 UTCVendor advisory
  67. 2026-08-25 13:55 UTCGHSA enrichment
  68. 2026-08-25 13:49 UTCEPSS rescore
  69. 2026-08-25 09:34 UTCVendor advisory
  70. 2026-08-25 09:34 UTCGHSA enrichment
  71. 2026-08-25 04:31 UTCVendor advisory
  72. 2026-08-25 04:31 UTCGHSA enrichment
  73. 2026-08-25 00:15 UTCVendor advisory
  74. 2026-08-25 00:15 UTCGHSA enrichment
  75. 2026-08-24 19:58 UTCEG score recompute

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-40469?
CVE-2026-40469 is a critical vulnerability published on July 13, 2026. Integer overflow vulnerability has been found in "builtin.c" program file of gawk (do_sub() routine). This issue could be used to overwrite gawk heap metadata and objects causing the program to crash. It affects 32-bit builds of gawk in versions 5.4.0 and below.
When was CVE-2026-40469 disclosed?
CVE-2026-40469 was first published in the National Vulnerability Database on July 13, 2026, with the most recent update on July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-40469 actively exploited?
CVE-2026-40469 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 71.0% of all scored CVEs.
What is the CVSS score of CVE-2026-40469?
CVE-2026-40469 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2026-40469?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-40469, 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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