Buffer overflow in Espressif Esp-idf

CVE-2026-55687

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 be…

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

  • Espressif Esp-idf — versions >= 6.0.0, < 6.0.2, >= 5.5.0, <= 5.5.4, >= 5.4.0, <= 5.4.4

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-55687?
CVE-2026-55687 is a high-severity vulnerability in Espressif Esp-idf, classified under Stack-based Buffer Overflow. CVSS score: 7.5/10. Published 2026-07-10.
How severe is CVE-2026-55687?
High severity. CVSS v3 base score is 7.5 out of 10.