CVE Explorer
CVE-2026-40553
Buffer overflow vulnerability has been found in "extension/readdir.c" program file of gawk (ftype() routine). This issue could be used to crash the program and potentially to achieve code execution, although the latter has not been confirmed to be feasible. 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":["readdir.c"],"programRoutines":[{"name":"ftype()"}],"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:d5267c245e7ff7bcadaadc8f363fc5c5a962ec4780be9768d82a9efa46fade3c · sha256:3d79faa6ba000683… · /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":"LOW","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:L/SI:L/SA:L","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"NONE…
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:d5267c245e7ff7bcadaadc8f363fc5c5a962ec4780be9768d82a9efa46fade3c · sha256:3d79faa6ba000683… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-121","description":"CWE-121 Stack-based Buffer Overflow","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:d5267c245e7ff7bcadaadc8f363fc5c5a962ec4780be9768d82a9efa46fade3c · sha256:3d79faa6ba000683… · /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:d5267c245e7ff7bcadaadc8f363fc5c5a962ec4780be9768d82a9efa46fade3c · sha256:3d79faa6ba000683… · /containers/cna/references/1
{"tags":["patch"],"url":"https://cgit.git.savannah.gnu.org/cgit/gawk.git/commit/?id=cca0366144336b49aaa7d5d949966ce8e2c70843"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:d5267c245e7ff7bcadaadc8f363fc5c5a962ec4780be9768d82a9efa46fade3c · sha256:3d79faa6ba000683… · /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.