CVE-2026-40469— Heap buffer overflow in gawk
Possible ATT&CK Techniques 1AI
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I. Basic Information for CVE-2026-40469
Vulnerability Information
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Vulnerability Title
Heap buffer overflow in gawk
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
整数溢出或超界折返
Source: NVD (National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-40469
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Patches & Fixes for CVE-2026-40469 (1)
Security Blog Posts for CVE-2026-40469 (1)
- 🔗 Vulnerabilities in GNU gawk software | CERT Polskathird-party-advisory
Same Patch Batch · GNU · 2026-07-13 · 5 CVEs total
| CVE-2026-15520 | 5.3 MEDIUM | GNU LibreDWG R2004 Section Decompression decode.c decompress_R2004_section heap-based over |
| CVE-2026-40553 | Stack-based buffer overflow in gawk | |
| CVE-2026-40468 | Heap buffer overflow in gawk | |
| CVE-2026-40467 | Use after free in gawk |
IV. Related Vulnerabilities
V. Comments for CVE-2026-40469
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