CVE-2026-55687

{"id": "CVE-2026-55687", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-55687", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-10T20:53:12.598119Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "espressif", "product": "esp-idf", "versions": [{"status": "affected", "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"}]}]}], "published": "2026-07-10T17:16:59.590", "references": [{"url": "https://github.com/espressif/esp-idf/commit/303c01305acb8ae5c4eb24a1786300681b4822a4", "source": "security-advisories@github.com"}, {"url": "https://github.com/espressif/esp-idf/commit/6ffafe8e93142ef8ffe51a6311d4abfc0f10fe77", "source": "security-advisories@github.com"}, {"url": "https://github.com/espressif/esp-idf/commit/7ccfc00f39faf1b7e5919f45b56fe44ba699d7c1", "source": "security-advisories@github.com"}, {"url": "https://github.com/espressif/esp-idf/commit/82c5c2dad45313786fb7e973059bc9094d95c3b2", "source": "security-advisories@github.com"}, {"url": "https://github.com/espressif/esp-idf/commit/f2df45bcedef11354e83c31a9718d680a68422c4", "source": "security-advisories@github.com"}, {"url": "https://github.com/espressif/esp-idf/releases/tag/v6.0.2", "source": "security-advisories@github.com"}, {"url": "https://github.com/espressif/esp-idf/security/advisories/GHSA-v6r2-f6p2-88cj", "source": "security-advisories@github.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-121"}, {"lang": "en", "value": "CWE-787"}]}], "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."}], "lastModified": "2026-07-10T21:16:57.073", "sourceIdentifier": "security-advisories@github.com"}