{"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": "2026-07-10T16:00:26.889Z"}, "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"}}}}

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