Vulnerability Intelligence Report
CVE-2021-26383
Insufficient bounds checking in AMD TEE (Trusted Execution Environment) could allow an attacker with a compromised userspace to invoke a command with malformed arguments leading to out of bounds memory access, potentially resulting in loss of integrity or availability.
No Active Exploit Signals
CVSS Base Score
7.9
HIGH
Exploitability:1.5
Impact Score:5.8
EPSS Probability:0.15%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-787 ↗CWE-787 Out-of-bounds Write
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| AMD | AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics | CezannePI-FP6 1.0.0.6 (unaffected) |
| AMD | AMD Ryzen™ 4000 Series Desktop Processors | ComboAM4v2 PI 1.2.0.5 (unaffected) |
| AMD | AMD Ryzen™ 7030 Series Mobile Processors with Radeon™ Graphics | CezannePI-FP6 1.0.0.6 (unaffected) |
| AMD | AMD Ryzen™ 5000 Series Desktop Processors with Radeon™ Graphics | ComboAM4v2 PI 1.2.0.5 (unaffected) |
| AMD | AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics | RenoirPI-FP6 1.0.0.7 (unaffected) |
| AMD | AMD Ryzen™ Embedded V2000 Series Processors | EmbeddedPI-FP6_1.0.0.6 (unaffected) |
| AMD | AMD Radeon™ RX 5000 Series Graphics Products | AMD Software: Adrenalin Edition 23.2.1 (22.40.01.45) (unaffected) |
| AMD | AMD Radeon™ RX 6000 Series Graphics Products | AMD Software: Adrenalin Edition 23.2.1 (22.40.01.45) (unaffected) |
| AMD | AMD Radeon™ PRO W5000 Series Graphics Products | AMD Software: PRO Edition 23.Q1 (22.40.37.05) (unaffected) |
| AMD | AMD Radeon™ PRO W6000 Series Graphics Products | AMD Software: PRO Edition 23.Q1 (22.40.37.05) (unaffected) |
| AMD | AMD Instinct™ MI210 | ROCm 6.4 (unaffected) |
| AMD | AMD Instinct™ MI250 | ROCm 6.4 (unaffected) |
| AMD | AMD Radeon™ PRO V520 Graphics Products | Contact your AMD Customer Engineering representative (unaffected) |
| AMD | AMD Radeon™ PRO V620 Graphics Products | Contact your AMD Customer Engineering representative (unaffected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.155%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Advanced Micro Devices Inc. · Vendor · USA |
| Reserved | 2021-01-29T21:24:26 |
| Published | 2025-09-05T23:21:25 |
| Patch Date | 2025-09-05 |
| Last Updated | 2025-09-08T13:49:58 |
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