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TI-2021-09371 Aliases CVE-2021-28139GHSA-jr8m-qx83-r6p3

The Bluetooth Classic implementation in Espressif ESP-IDF 4.4 and earlier does not…

Priority MEDIUM 41Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

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.

Why it matters now

EPSS 0.01401 72nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:espressif:esp-idf:*:*:*:*:*:*:*:*up to 4.4Vulnerableespressif
cpe:2.3:h:espressif:esp32:-:*:*:*:*:*:*:*not specified by NVDRunning onespressif
  • cpe:2.3:a:espressif:esp-idf:*:*:*:*:*:*:*:* Versions up to 4.4 Vulnerable ·espressif
  • cpe:2.3:h:espressif:esp32:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·espressif

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-28139
  2. 2026-10-03 Alias added: GHSA-jr8m-qx83-r6p3

References

Advisory 4

  • TI-2024-22076 Buffer Overflow vulnerability in esp-idf v.5.1 allows a remote attacker to execute… CVSS 3.1MEDIUM 6.5
  • TI-2026-33125 ESF-IDF: Out-of-Bounds Write in ESP-TEE Secure Service Wrappers CVSS 3.1CRITICAL 9.3
  • TI-2025-32598 ESP-NOW Integer Underflow Vulnerability Advisory CVSS 4.0HIGH 7.2
  • TI-2022-08703 Espressif Bluetooth Mesh Stack Vulnerable to Out-of-bounds Write leading to memory buffer corruption CVSS 3.1HIGH 8.8
  • TI-2026-33292 ESF-IDF: Remote Null Pointer Dereference in WebSocket Server CVSS 3.1HIGH 7.5
  • TI-2024-35792 Espressif Esp idf v5.3.0 is vulnerable to Insecure Permissions resulting in… CVSS 3.1HIGH 8.8
See all 30 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences