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High severity8.8NVD Advisory· Published Sep 7, 2021· Updated Jun 17, 2026

CVE-2021-28139

CVE-2021-28139

Description

The Bluetooth Classic implementation in Espressif ESP-IDF 4.4 and earlier does not properly restrict the Feature Page upon reception of an LMP Feature Response Extended packet, allowing attackers in radio range to trigger arbitrary code execution in ESP32 via a crafted Extended Features bitfield payload.

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Affected products

4
  • Espressif/Esp Idf2 versions
    cpe:2.3:a:espressif:esp-idf:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:espressif:esp-idf:*:*:*:*:*:*:*:*range: <=4.4
    • (no CPE)range: <=4.4
  • Espressif/ESP-IDFdescription
  • Espressif/ESP32llm-fuzzy
    Range: <=4.4

Patches

Vulnerability mechanics

References

2

News mentions

0

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