CVE-2021-33139: intel ac_1550_firmware
Vulnerability summary
CVE-2021-33139 is a medium (CVSS 5.7) vulnerability in intel ac_1550_firmware. EPSS estimates a 0.49% chance of exploitation in the next 30 days, higher than 42.2% of scored vulnerabilities.
Not severe (CVSS 5.7, adjacent network); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 43 · Related 42Timeline
- 09-02-2022PublishedVulnerability first disclosed.
- 05-05-2025Last modifiedVulnerability information updated.
Description
Improper conditions check in firmware for some Intel(R) Wireless Bluetooth(R) and Killer(TM) Bluetooth(R) products before version 22.100 may allow an authenticated user to potentially enable denial of service via adjacent access.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated5.7MediumCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- NVDNIST5.7MediumCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.49%
Chance of exploitation in the next 30 days
Percentile
42%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.49% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: adjacent network, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Intel16 products
- ac_1550_firmware< 22.100
- ac_3165_firmware< 22.100
- ac_7265_firmware< 22.100
- ac_8260_firmware< 22.100
- ac_8265_firmware< 22.100
Ubuntu1 product
- linux-firmwareAll versions (No fix recorded)
2 vendors · 17 products
References
3 links- www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00604.htmlX Refsource MISCREPORTVendor Advisory