{"api_version":"1","generated_at":"2026-04-18T05:16:42+00:00","cve":"CVE-2026-40334","urls":{"html":"https://cve.report/CVE-2026-40334","api":"https://cve.report/api/cve/CVE-2026-40334.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-40334","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-40334"},"summary":{"title":"libgphoto2 missing null termination in ptp_unpack_Canon_FE() filename buffer in ptp-pack.c","description":"libgphoto2 is a camera access and control library. In versions up to and including 2.5.33, a missing null terminator exists in ptp_unpack_Canon_FE() in camlibs/ptp2/ptp-pack.c (line 1377). The function copies a filename into a 13-byte buffer using strncpy without explicitly null-terminating the result. If the source data is exactly 13 bytes with no null terminator, the buffer is left unterminated, leading to out-of-bounds reads in any subsequent string operation. 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In versions up to and including 2.5.33, a missing null terminator exists in ptp_unpack_Canon_FE() in camlibs/ptp2/ptp-pack.c (line 1377). The function copies a filename into a 13-byte buffer using strncpy without explicitly null-terminating the result. If the source data is exactly 13 bytes with no null terminator, the buffer is left unterminated, leading to out-of-bounds reads in any subsequent string operation. Commit 259fc7d3bfe534ce4b114c464f55b448670ab873 patches the issue."}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"PHYSICAL","availabilityImpact":"LOW","baseScore":3.5,"baseSeverity":"LOW","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-170","description":"CWE-170: Improper Null Termination","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-04-17T23:16:38.751Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M"},"references":[{"name":"https://github.com/gphoto/libgphoto2/security/advisories/GHSA-ph87-cc3j-c6hm","tags":["x_refsource_CONFIRM"],"url":"https://github.com/gphoto/libgphoto2/security/advisories/GHSA-ph87-cc3j-c6hm"},{"name":"https://github.com/gphoto/libgphoto2/commit/259fc7d3bfe534ce4b114c464f55b448670ab873","tags":["x_refsource_MISC"],"url":"https://github.com/gphoto/libgphoto2/commit/259fc7d3bfe534ce4b114c464f55b448670ab873"}],"source":{"advisory":"GHSA-ph87-cc3j-c6hm","discovery":"UNKNOWN"},"title":"libgphoto2 missing null termination in ptp_unpack_Canon_FE() filename buffer in ptp-pack.c"}},"cveMetadata":{"assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","assignerShortName":"GitHub_M","cveId":"CVE-2026-40334","datePublished":"2026-04-17T23:16:38.751Z","dateReserved":"2026-04-10T22:50:01.357Z","dateUpdated":"2026-04-17T23:16:38.751Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-04-18 00:16:37","lastModifiedDate":"2026-04-18 00:16:37","problem_types":["CWE-170","CWE-170 CWE-170: Improper Null Termination"],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L","baseScore":3.5,"baseSeverity":"LOW","attackVector":"PHYSICAL","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"NONE","availabilityImpact":"LOW"},"exploitabilityScore":0.9,"impactScore":2.5}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"40334","Ordinal":"1","Title":"libgphoto2 missing null termination in ptp_unpack_Canon_FE() fil","CVE":"CVE-2026-40334","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"40334","Ordinal":"1","NoteData":"libgphoto2 is a camera access and control library. In versions up to and including 2.5.33, a missing null terminator exists in ptp_unpack_Canon_FE() in camlibs/ptp2/ptp-pack.c (line 1377). The function copies a filename into a 13-byte buffer using strncpy without explicitly null-terminating the result. If the source data is exactly 13 bytes with no null terminator, the buffer is left unterminated, leading to out-of-bounds reads in any subsequent string operation. Commit 259fc7d3bfe534ce4b114c464f55b448670ab873 patches the issue.","Type":"Description","Title":"libgphoto2 missing null termination in ptp_unpack_Canon_FE() fil"}]}}}