{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-55687","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-06-17T00:13:10.650Z","datePublished":"2026-07-10T15:59:31.646Z","dateUpdated":"2026-07-10T20:58:56.932Z"},"containers":{"cna":{"title":"ESF-IDF: Stack-Based Out-of-Bounds Write in JPEG Decoder DQT Marker Parsing","problemTypes":[{"descriptions":[{"cweId":"CWE-121","lang":"en","description":"CWE-121: Stack-based Buffer Overflow","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-787","lang":"en","description":"CWE-787: Out-of-bounds Write","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"references":[{"name":"https://github.com/espressif/esp-idf/security/advisories/GHSA-v6r2-f6p2-88cj","tags":["x_refsource_CONFIRM"],"url":"https://github.com/espressif/esp-idf/security/advisories/GHSA-v6r2-f6p2-88cj"},{"name":"https://github.com/espressif/esp-idf/commit/303c01305acb8ae5c4eb24a1786300681b4822a4","tags":["x_refsource_MISC"],"url":"https://github.com/espressif/esp-idf/commit/303c01305acb8ae5c4eb24a1786300681b4822a4"},{"name":"https://github.com/espressif/esp-idf/commit/6ffafe8e93142ef8ffe51a6311d4abfc0f10fe77","tags":["x_refsource_MISC"],"url":"https://github.com/espressif/esp-idf/commit/6ffafe8e93142ef8ffe51a6311d4abfc0f10fe77"},{"name":"https://github.com/espressif/esp-idf/commit/7ccfc00f39faf1b7e5919f45b56fe44ba699d7c1","tags":["x_refsource_MISC"],"url":"https://github.com/espressif/esp-idf/commit/7ccfc00f39faf1b7e5919f45b56fe44ba699d7c1"},{"name":"https://github.com/espressif/esp-idf/commit/82c5c2dad45313786fb7e973059bc9094d95c3b2","tags":["x_refsource_MISC"],"url":"https://github.com/espressif/esp-idf/commit/82c5c2dad45313786fb7e973059bc9094d95c3b2"},{"name":"https://github.com/espressif/esp-idf/commit/f2df45bcedef11354e83c31a9718d680a68422c4","tags":["x_refsource_MISC"],"url":"https://github.com/espressif/esp-idf/commit/f2df45bcedef11354e83c31a9718d680a68422c4"},{"name":"https://github.com/espressif/esp-idf/releases/tag/v6.0.2","tags":["x_refsource_MISC"],"url":"https://github.com/espressif/esp-idf/releases/tag/v6.0.2"}],"affected":[{"vendor":"espressif","product":"esp-idf","versions":[{"version":">= 6.0.0, < 6.0.2","status":"affected"},{"version":">= 5.5.0, <= 5.5.4","status":"affected"},{"version":">= 5.4.0, <= 5.4.4","status":"affected"},{"version":"<= 5.3.5","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-07-10T16:00:26.889Z"},"descriptions":[{"lang":"en","value":"ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. Versions 6.0.1, 5.5.4, 5.4.4, 5.3.5, and possibly prior contain an out-of-bounds write in jpeg_parse_dqt_marker() in components/esp_driver_jpeg/jpeg_parse_marker.c because the attacker-controlled DQT marker Tq nibble is used as an index into the qt_tbl array without validating that it is in the range 0..3, allowing malformed JPEG input to corrupt stack memory and reliably trigger a denial of service. This issue is fixed in version 6.0.2 and is expected to be fixed in versions 5.5.5, 5.4.5, and 5.3.6."}],"source":{"advisory":"GHSA-v6r2-f6p2-88cj","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-10T20:53:12.598119Z","id":"CVE-2026-55687","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-07-10T20:58:56.932Z"}}]}}