CVE-2026-40468

CRITICALNVD 9.19.1—
EchelonGraph scoreHIGH confidence

Score 9.1 from GitHub Security Advisory (severity: LOW) 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. This issue may lead to memory exhaustion on the hosting operating system and could be used to overwrite gawk heap metadata and objects with attacker-controlled bytes. It affects gawk in versions 5.4.0 and below.

CVSS v3
9.1
EG Score
9.1(high)
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
10%
KEV
Not listed

Published

July 13, 2026

Last Modified

July 14, 2026

Advisory Details (2)

Auto-updated Jul 14, 2026
No patch confirmed yet.
generic

Minor integer overflow fixes. - gawk.git - gawk

https://cgit.git.savannah.gnu.org/cgit/gawk.git/commit/?id=062f2f2581b991362c046f7f2e238ffa34e6f8c7
generic

Vulnerabilities in GNU gawk software | CERT Polska

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

Vendor Advisories for CVE-2026-40468(2)

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
ubuntugawk (1:4.1.4+dfsg-1ubuntu0.1~esm2) @ bionic2026-07-27ubuntu

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.

Weakness Classification(1)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 36× in last 7d / 51× 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. 2026-07-29 00:27 UTCGHSA enrichment
  2. 2026-07-28 20:47 UTCGHSA enrichment
  3. 2026-07-28 17:09 UTCEG score recompute
  4. 2026-07-28 17:09 UTCGHSA enrichment
  5. 2026-07-28 15:36 UTCEPSS rescore
  6. 2026-07-28 12:08 UTCGHSA enrichment
  7. 2026-07-28 07:49 UTCGHSA enrichment
  8. 2026-07-28 04:08 UTCGHSA enrichment
  9. 2026-07-28 00:30 UTCGHSA enrichment
  10. 2026-07-27 20:52 UTCVendor advisory
  11. 2026-07-27 20:52 UTCGHSA enrichment
  12. 2026-07-27 16:57 UTCEG score recompute
  13. 2026-07-27 16:57 UTCGHSA enrichment
  14. 2026-07-27 14:13 UTCEPSS rescore
  15. 2026-07-27 13:19 UTCGHSA enrichment
  16. 2026-07-27 09:41 UTCGHSA enrichment
  17. 2026-07-27 06:04 UTCVendor advisory
  18. 2026-07-27 06:04 UTCGHSA enrichment
  19. 2026-07-27 02:25 UTCGHSA enrichment
  20. 2026-07-26 22:46 UTCVendor advisory
  21. 2026-07-26 22:46 UTCGHSA enrichment
  22. 2026-07-26 19:09 UTCGHSA enrichment
  23. 2026-07-26 15:31 UTCEG score recompute
  24. 2026-07-26 15:31 UTCVendor advisory
  25. 2026-07-26 15:31 UTCGHSA enrichment
Show 26 more
  1. 2026-07-26 14:54 UTCEPSS rescore
  2. 2026-07-26 14:54 UTCEPSS rescore
  3. 2026-07-26 11:53 UTCEG score recompute
  4. 2026-07-26 11:53 UTCVendor advisory
  5. 2026-07-26 11:53 UTCGHSA enrichment
  6. 2026-07-24 14:17 UTCEPSS rescore
  7. 2026-07-24 14:17 UTCEPSS rescore
  8. 2026-07-23 14:18 UTCEPSS rescore
  9. 2026-07-23 14:18 UTCEPSS rescore
  10. 2026-07-23 03:11 UTCEG score recompute
  11. 2026-07-22 14:08 UTCEPSS rescore
  12. 2026-07-21 15:24 UTCEPSS rescore
  13. 2026-07-20 17:08 UTCEPSS rescore
  14. 2026-07-19 14:31 UTCEPSS rescore
  15. 2026-07-18 10:04 UTCEPSS rescore
  16. 2026-07-17 06:35 UTCGHSA enrichment
  17. 2026-07-17 02:56 UTCGHSA enrichment
  18. 2026-07-16 23:19 UTCGHSA enrichment
  19. 2026-07-16 19:41 UTCGHSA enrichment
  20. 2026-07-16 17:03 UTCEPSS rescore
  21. 2026-07-16 16:04 UTCEG score recompute▲ 7.00
  22. 2026-07-16 16:04 UTCGHSA enrichment
  23. 2026-07-15 02:00 UTCEPSS rescore
  24. 2026-07-14 01:44 UTCNVD updateCVSS v3 → 9.1 · severity → CRITICAL
  25. 2026-07-13 12:53 UTCEG score recompute
  26. 2026-07-13 12:52 UTCMITRE cvelistV5first tracked

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-40468?
CVE-2026-40468 is a critical vulnerability published on July 13, 2026. Integer overflow vulnerability has been found in "builtin.c" program file of gawk. This issue may lead to memory exhaustion on the hosting operating system and could be used to overwrite gawk heap metadata and objects with attacker-controlled bytes. It affects gawk in versions 5.4.0 and below.
When was CVE-2026-40468 disclosed?
CVE-2026-40468 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-2026-40468 actively exploited?
CVE-2026-40468 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 89.8% of all scored CVEs.
What is the CVSS score of CVE-2026-40468?
CVE-2026-40468 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2026-40468?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-40468, 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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