CVE-2021-35093

Name: CVE-2021-35093
Creator: NVD / NIST
Published: 2022-01-03T08:15:09.147+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.25%

Last modified Jun 17, 2026

CVE-2021-35093 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Possible memory corruption in BT controller when it receives an oversized LMP packet over 2-DH1 link and leads to denial of service in BlueCore. EPSS estimates a 0.25% chance of exploitation in the next 30 days.

Description

Possible memory corruption in BT controller when it receives an oversized LMP packet over 2-DH1 link and leads to denial of service in BlueCore

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

0.25%

15.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Qualcomm	Csr8510 A10 Firmware	All versions
Qualcomm	Csr8811 A12 Firmware	All versions

References

https://www.qualcomm.com/company/product-security/bulletins/december-2021-bulletinVendor Advisory
https://www.qualcomm.com/company/product-security/bulletins/december-2021-bulletinVendor Advisory

Timeline

Published: Jan 3, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-35093?

Possible memory corruption in BT controller when it receives an oversized LMP packet over 2-DH1 link and leads to denial of service in BlueCore

How severe is CVE-2021-35093?

CVE-2021-35093 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.25% probability of exploitation in the next 30 days.

How do I fix CVE-2021-35093?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-35093?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST