CVE Explorer
CVE-2026-40467
Use After Free vulnerability has been found in "io.c" program file of gawk (do_getline_redir() routine). This issue may lead to a crash. It affects gawk in versions 5.4.0 and below.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"defaultStatus":"unaffected","product":"gawk","programFiles":["io.c"],"programRoutines":[{"name":"do_getline_redir()"}],"repo":"https://cgit.git.savannah.gnu.org/cgit/gawk.git/","vendor":"GNU","versions":[{"lessThanOrEqual":"5.4.0","status":"affected","version":"0","versionType":"semver"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:7248834fbb1b49d72a14b959e484f52b192b93f9d7d708d29bc64512d81c675d · sha256:ee32d47a9c5893ba… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"LOCAL","baseScore":5.1,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"N…
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:7248834fbb1b49d72a14b959e484f52b192b93f9d7d708d29bc64512d81c675d · sha256:ee32d47a9c5893ba… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-416","description":"CWE-416 Use After Free","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:7248834fbb1b49d72a14b959e484f52b192b93f9d7d708d29bc64512d81c675d · sha256:ee32d47a9c5893ba… · /containers/cna/problemTypes/0/descriptions/0
Source references
2 source assertions{"tags":["third-party-advisory"],"url":"https://cert.pl/en/posts/2026/07/CVE-2026-40467"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:7248834fbb1b49d72a14b959e484f52b192b93f9d7d708d29bc64512d81c675d · sha256:ee32d47a9c5893ba… · /containers/cna/references/1
{"tags":["patch"],"url":"https://cgit.git.savannah.gnu.org/cgit/gawk.git/commit/?id=a2d18c74109e41bec29a23098eba2e00057286d8"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:7248834fbb1b49d72a14b959e484f52b192b93f9d7d708d29bc64512d81c675d · sha256:ee32d47a9c5893ba… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.