CVE-2026-40469

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Source
https://cve.org/CVERecord?id=CVE-2026-40469
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40469.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-40469
Downstream
BELL (1)
DEBIAN (1)
ECHO (1)
JLSEC (1)
MGASA (1)
OESA (3)
RHSA (2)
UBUNTU (1)
Published
2026-07-13T12:07:55Z
Modified
2026-10-21T10:45:57Z
Severity
  • 5.1 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator
Summary
Heap buffer overflow in gawk
Details

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.

Database specific 
{
    "cna_assigner":  "CERT-PL",
    "cwe_ids":  [
        "CWE-190"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40469.json",
    "unresolved_ranges":  [
        {
            "extracted_events":  [
                {
                    "range":  [
                        {
                            "last_affected":  "5.4.0"
                        }
                    ],
                    "source":  "AFFECTED_FIELD",
                    "strategy":  "StandardRange"
                }
            ]
        },
        {
            "extracted_events":  [
                {
                    "range":  [
                        {
                            "last_affected":  "5.4.0"
                        }
                    ],
                    "source":  "DESCRIPTION"
                }
            ]
        }
    ]
}
References

Affected packages

Git / cgit.git.savannah.gnu.org/cgit/gawk.git

Affected ranges

Type
GIT
Repo
https://cgit.git.savannah.gnu.org/cgit/gawk.git
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
ae1b2d508f46913269a9e62aceda3636afe8147b
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "fixed":  "ae1b2d508f46913269a9e62aceda3636afe8147b"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        }
    ]
}

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40469.json"