CVE-2021-0066: intel amt_ac_8260_firmware Improper Input Validation
Vulnerability summary
CVE-2021-0066 is a high (CVSS 8.4) Improper Input Validation vulnerability in intel amt_ac_8260_firmware. EPSS estimates a 0.32% chance of exploitation in the next 30 days, higher than 25.2% of scored vulnerabilities.
Not severe (CVSS 8.4, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 4 · Related 3Timeline
- 09-02-2022PublishedVulnerability first disclosed.
- 05-05-2025Last modifiedVulnerability information updated.
Description
Improper input validation in firmware for Intel(R) PROSet/Wireless Wi-Fi in multiple operating systems and Killer(TM) Wi-Fi in Windows 10 and 11 may allow an unauthenticated user to potentially enable escalation of privilege via local access.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated8.4HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVDNIST8.4HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.32%
Chance of exploitation in the next 30 days
Percentile
25%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.32% 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: local access, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Intel22 products
- amt_ac_8260_firmware< 11.8.90
- amt_ac_8265_firmware< 11.8.90
- amt_ac_9260_firmware< 12.0.85
- amt_ac_9560_firmware< 12.0.85
- amt_wi-fi_6_ax200_firmware< 12.0.85 | ≥ 14.0.0, < 14.1.60 | ≥ 15.0.0, < 15.0.35
Ubuntu1 product
- linux-firmwareAll versions (No fix recorded)
2 vendors · 23 products
References
3 links- www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00539.htmlX Refsource MISCREPORTPatchVendor Advisory