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OpenAdvisories
High · 7.5 CVE-2026-55687 EUVD-2026-42939

ESF-IDF: Stack-Based Out-of-Bounds Write in JPEG Decoder DQT Marker Parsing

Published Jul 10, 2026 · Updated Jul 10, 2026 · Assigned by GitHub_M

Description

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.

Affected products

VendorProductAffectedFixed
espressif esp-idf >= 6.0.0, < 6.0.2, >= 5.5.0, <= 5.5.4, >= 5.4.0, <= 5.4.4, <= 5.3.5 —

References