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CVE-2021-26392

25
FAUCET Score

CVE-2021-26392 describes an out-of-bounds write vulnerability in AMD products, specifically within the 'LoadModule' function due to insufficient size verification. This flaw could allow an attacker with local privileges to achieve OS/kernel code execution by loading a malicious Trusted Application. Rated with a CVSS score of 7.8 (HIGH), it presents a significant risk with high impact on confidentiality, integrity, and availability, requiring low attack complexity and no user interaction. Currently, there is no public exploit code available, nor is it listed on the CISA KEV catalog, and it has received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 22.10.20CPE matchmatch criteria
cpe:2.3:a:amd:enterprise_driver:*:*:*:*:*:*:*:*
< 22.q2CPE matchmatch criteria
cpe:2.3:a:amd:radeon_pro_software:*:*:*:*:enterprise:*:*:*
< 22.5.2CPE matchmatch criteria
cpe:2.3:a:amd:radeon_software:*:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:amd:radeon_rx_vega_56_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:amd:radeon_rx_vega_64_firmware:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.26%
Probability of exploitation in next 30 days
EPSS Percentile
17.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0026 is in the 53rd percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2021-26392Moderate

hw: amd: Insufficient verification in 'LoadModule' may lead to an out-of-bounds write

Nov 8, 2022

References

amd.com / en/corporate/product-security/bulletin/amd-sb-1029
Vendor Advisory
amd.com / en/corporate/product-security/bulletin/amd-sb-5001