How severe is CVE-2021-35093?

CVE-2021-35093 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-35093 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-35093?

CVE-2021-35093 primarily affects Qualcomm Csr8510 A10 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-35093?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-35093 published?

CVE-2021-35093 was published on 2022-01-03 and last updated on 2026-06-17.

CVE-2021-35093

CVE-2021-35093 is a medium-severity vulnerability in Qualcomm Csr8510 A10 Firmware with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 3.3
EPSS exploit prediction: 0% (16th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Qualcomm Csr8510 A10 Firmware
Published: 2022-01-03
Last modified: 2026-06-17

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

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 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-35093 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-35093?: CVE-2021-35093 primarily affects Qualcomm Csr8510 A10 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-35093?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-35093 published?: CVE-2021-35093 was published on 2022-01-03 and last updated on 2026-06-17.

References

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

Affected products (2)

cpe:2.3:o:qualcomm:csr8510_a10_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:csr8811_a12_firmware:-:*:*:*:*:*:*:*

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