CVE-2026-55687

HIGH

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

Title source: cna
STIX 2.1

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.

References (7)

Core 7
Core References

Scores

CVSS v3 7.5
EPSS 0.0039
EPSS Percentile 31.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-121 CWE-787
Status published
Products (4)
espressif/esp-idf <= 5.3.5
espressif/esp-idf >= 5.4.0, <= 5.4.4
espressif/esp-idf >= 5.5.0, <= 5.5.4
espressif/esp-idf >= 6.0.0, < 6.0.2
Published Jul 10, 2026
Tracked Since Jul 10, 2026