Buffer overflow in Espressif Esp32

CVE-2021-28136

The Bluetooth Classic implementation in Espressif ESP-IDF 4.4 and earlier does not properly handle the reception of multiple LMP IO Capability Request packets during the pairing process, allowing attackers in radio range to trigger memory…

Vulnerability class: Buffer Overflow

EPSS: 0.009 (54.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

  • cve@mitre.org (Product, Third Party Advisory, x_refsource_MISC)
  • cve@mitre.org (Product, Third Party Advisory, x_refsource_MISC)
  • cve@mitre.org (Product, x_refsource_MISC, Vendor Advisory)
  • cve@mitre.org (Technical Description, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-28136?
CVE-2021-28136 is a medium-severity vulnerability in Espressif Esp32, classified under Out-of-bounds Write. CVSS score: 6.5/10. Published 2021-09-07.
How severe is CVE-2021-28136?
Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2021-28136 known to be exploited?
3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.