Is CVE-2021-34148 in the CISA KEV catalog?

No. CVE-2021-34148 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-34148?

CVE-2021-34148 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2021-34148?

CVE-2021-34148 has an EPSS score of 0.58% (44th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-34148?

Upgrade bluez-firmware on debian 12 to 1.2-8 or later.

CVE & CISA-KEV Catalog

CVE-2021-34148

MEDIUM

6.5

CVSS v3

NVD

Description

The Bluetooth Classic implementation in the Cypress WICED BT stack through 2.9.0 for CYW20735B1 devices does not properly handle the reception of LMP_max_slot with a greater ACL Length after completion of the LMP setup procedure, allowing attackers in radio range to trigger a denial of service (firmware crash) via a crafted LMP packet.

How to fix

Remediation Available

bluez-firmwareDebian

Fixed in:1.2-8CVE-2021-34148

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorAdjacent

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.58%probability of exploitation in 30 days

44thpercentile

Moderate risk: more likely to be exploited than 44% of all known CVEs.

References

Vendor Advisory1

cypress.com

Third-Party Advisory1

dl.packetstormsecurity.net

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.