SARA / Free Tools / CVE / CVE-2023-31326

CVE-2023-31326 — Use of an uninitialized variable in the ASP could allow an attacker to access le

Use of an uninitialized variable in the ASP could allow an attacker to access leftover data from a trusted execution environment (TEE) driver, potentially leading to loss of confidentiality.

CVSS

2.8 LOW

EPSS

0.01% (top 98.80%)

CWE

CWE-457

Published

2025-09-06T16:48:43.991Z

Last modified

2025-09-08T20:04:43.607Z

CVSS vector

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

01What is this vulnerability?

Use of an uninitialized variable in the ASP could allow an attacker to access leftover data from a trusted execution environment (TEE) driver, potentially leading to loss of confidentiality.

02Affected products

Vendor	Product	Versions
AMD	AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics	Cezanne-FP6_1.0.1.0
AMD	AMD Ryzen™ 7030 Series Mobile processors with Radeon™ Graphics	Cezanne-FP6_1.0.1.0
AMD	AMD Ryzen™ 4000 Series Desktop Processors	ComboAM4v2PI_1.2.0.CA
AMD	AMD Ryzen™ 5000 Series Desktop Processors	ComboAM4v2PI_1.2.0.CA
AMD	AMD Ryzen™ 7040 Series Mobile Processors with Radeon™ Graphics	PhoenixPI-FP8-FP7_1.1.0.2
AMD	AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics	Renoir-FP6_ 1.0.0.D
AMD	AMD Ryzen™ 6000 Series Processors with Radeon™ Graphics	Rembrandt-FP7_1.0.0.A
AMD	AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics	Cezanne-FP6_1.0.1.0
AMD	AMD Ryzen™ 7020 Series Processors with Radeon™ Graphics	MendocinoPI-FT6_1.0.0.6
AMD	AMD Ryzen™ Embedded V2000 Series Processors	EmbeddedPI-FP6_1.0.0.A
AMD	AMD Ryzen™ Embedded V3000 Series Processors	Embedded-PI_FP7r2 1009
AMD	AMD Radeon™ RX 7000 Series Graphics Products	AMD Software: Adrenalin Edition 24.7.1 (24.10.29.01)
AMD	AMD Radeon™ PRO W7000 Series Graphics Products	AMD Software: PRO Edition 24.Q2 (24.10.20)
AMD	AMD Instinct™ MI210	ROCm 6.4
AMD	AMD Instinct™ MI250	ROCm 6.4
AMD	AMD Radeon™ PRO V710 Graphics Products	Contact your AMD Customer Engineering representative

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

Patch to a fixed version listed in the vendor advisory (see references below).
Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

Published: 2025-09-06T16:48:43.991Z
Last modified: 2025-09-08T20:04:43.607Z

09References

www.amd.com — https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-4012.html
www.amd.com — https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-6018.html
www.amd.com — https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-5007.html

Want this in your SOAR or SIEM?
SARA's API returns EPSS, CVSS, KEV, and an analyst-grade summary in one call.

Read the API reference →

EPSS detail → Search KEV → Ask SARA →