CVE-2023-31330 — An out-of-bounds read in the ASP could allow a privileged attacker with access t

An out-of-bounds read in the ASP could allow a privileged attacker with access to a malicious bootloader to potentially read sensitive memory resulting in loss of confidentiality.

01What is this vulnerability?

An out-of-bounds read in the ASP could allow a privileged attacker with access to a malicious bootloader to potentially read sensitive memory resulting in loss of confidentiality.

02Affected products

Vendor	Product	Versions
AMD	AMD Ryzen™ Threadripper™ 3000 Processors	CastlePeakPI-SP3r3 1.0.0.C
AMD	AMD Ryzen™ Threadripper™ PRO 5000 WX	Series Processors — chagallwspi_swrx8_1.0.0.9
AMD	AMD Ryzen™ Threadripper™ PRO 3000 WX	Series Processors — CastlePeakWSPI-sWRX8 1.0.0.E
AMD	AMD Ryzen™ Threadripper™ PRO 3000 WX	Series Processors — chagallwspi_swrx8_1.0.0.9
AMD	AMD Ryzen™ Threadripper™ PRO 7000 WX	Series Processors — StrormPeakPI-SP6_1.0.0.1e, StrormPeakPI-SP6_1.1.0.0c
AMD	AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics	Picasso-FP5_1.0.1.1
AMD	AMD Ryzen™ 5000 Series Desktop Processors	ComboAM4v2PI_1.2.0.CA
AMD	AMD Ryzen™ 3000 Series Desktop Processors	ComboAM4PI_1.0.0.E
AMD	AMD Ryzen™ 8000 Series Desktop Processors	ComboAM5 1.1.0.2
AMD	AMD Ryzen™ 7040 Series Mobile Processors with Radeon™ Graphics	PhoenixPI-FP8-FP7_1.1.0.1b
AMD	AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics	Renoir-FP6_1.0.0.Ea
AMD	AMD Ryzen™ 6000 Series Processors with Radeon™ Graphics	Rembrandt-FP7_1.0.0.A
AMD	AMD Ryzen™ Threadripper™ 7000 Processors	StrormPeakPI-SP6_1.1.0.0c
AMD	AMD Ryzen™ 7020 Series Processors with Radeon™ Graphics	MendocinoPI-FT6_1.0.0.6
AMD	AMD Ryzen™ 7045 Series Mobile Processors with Radeon™ Graphics	DragonRangeFL1PI 1.0.0.3C
AMD	AMD Ryzen™ 7035 Series Processors with Radeon™ Graphics	Rembrandt-FP7_1.0.0.A
AMD	AMD Ryzen™ 7030 Series Mobile Processors with Radeon™ Graphics	Cezanne-FP6_1.0.1.1a
AMD	AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics	Cezanne-FP6_1.0.1.1a
AMD	AMD Ryzen™ 7000 Series Desktop Processors	ComboAM5 1.1.0.2
AMD	AMD Ryzen™ 5000 Series Desktop Processors with Radeon™ Graphics	ComboAM4v2PI_1.2.0.CA
AMD	AMD Ryzen™ 3000 Series Desktop Processors	ComboAM4v2PI_1.2.0.CA
AMD	AMD Ryzen™ 4000 Series Desktop Processors	ComboAM4v2PI_1.2.0.CA
AMD	AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics	Picasso-FP5_1.0.1.1

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: 2025-09-06T16:57:08.320Z
• Last modified: 2025-09-08T20:04:07.101Z

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-5007.html