CVE-2026-0438A System Management Mode (SMM) handler could perform a callout to code located in non-SMM/untrusted memory. A highly privileged attacker…
- 5.4MediumCVSS base score
- 0.14%Exploitation in 30 daysEPSS · top 97% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
A System Management Mode (SMM) handler could perform a callout to code located in non-SMM/untrusted memory. A highly privileged attacker could, with active user interaction and under high complexity and present preconditions, trigger execution of attacker-controlled code in SMM, potentially compromising the system’s confidentiality, integrity, and availability.
Timeline
ID reserved
By AMD
- 5 months later
· 5 months later
Published
- 4 days later
· 4 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| AMDCNA (assigner) | 4.0 | Medium5.4 | CVSS:4.0/AV:P/AC:H/AT:P/PR:H/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| NVDNVD · Awaiting Analysis | 4.0 | Medium5.4 | CVSS:4.0/AV:P/AC:H/AT:P/PR:H/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
- EPSS (exploitation in 30 days)
- 0.14% · top 97% of all CVEs (15 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.4.
Affected products
AMD · AMD Ryzen™ 7040 Series Mobile Processors with Radeon™ Graphics
- unaffected PhoenixPI-FP8-FP7_1.2.0.0f
AMD · AMD Ryzen™ 7045 Series Mobile Processors with Radeon™ Graphics
- unaffected DragonRangeFL1PI 1.0.0.3k
AMD · AMD Ryzen™ 7000 Series Desktop Processors
- unaffected ComboAM5PI 1.0.0.d
AMD · AMD Ryzen™ 9000HX Series Processors
- unaffected FireRangeFL1PI 1.0.0.0d
AMD · AMD Ryzen™ AI 300 Series Processors
- unaffected StrixKrackanPI-FP8_1.1.0.0e
AMD · AMD Ryzen™ Threadripper™ PRO 7000 WX-Series Processors
- unaffected StormPeakPI-SP6 1.0.0.1m
- unaffected StormPeakPI-SP6_1.1.0.0k
AMD · AMD Ryzen™ 7000 Series Desktop Processors
- unaffected ComboAM5PI 1.1.0.3f
AMD · AMD Ryzen™ 7000 Series Desktop Processors
- unaffected ComboAM5PI_1.2.0.3i
AMD · AMD Ryzen™ 8000 Series Desktop Processors
- unaffected ComboAM5PI 1.1.0.3f
AMD · AMD Ryzen™ 8000 Series Desktop Processors
- unaffected ComboAM5PI_1.2.0.3i
AMD · AMD Ryzen™ 9000 Series Desktop Processors
- unaffected ComboAM5PI_1.2.0.3i
AMD · AMD Ryzen™ 8040 Series Mobile Processors with Radeon™ Graphics
- unaffected PhoenixPI-FP8-FP7_1.2.0.0f
AMD · AMD Ryzen™ AI Max 300 Series Processors
- unaffected StrixHaloPI-FP11_1.0.0.2a
AMD · AMD Ryzen™ Z1 Series Processors
- unaffected PhoenixPI-FP8-FP7_1.2.0.0f
AMD · AMD Ryzen™ Z1 Series Processors
- unaffected PhoenixPI-FP8-FP7_1.2.0.0f
AMD · AMD Ryzen™ Z2 Series Processors Extreme
- unaffected StrixKrackanPI-FP8_1.1.0.2d
AMD · AMD Ryzen™ Z2 Series Processors
- unaffected PhoenixPI-FP8-FP7_1.2.0.0f
AMD · AMD Ryzen™ Threadripper™ PRO 7000 WX-Series Processors
- unaffected ShimadaPeakPI-SP6 1.0.0.1c
AMD · AMD Ryzen™ Threadripper™ 7000 Processors
- unaffected ShimadaPeakPI-SP6 1.0.0.1c
AMD · AMD Ryzen™ Threadripper™ 9000 Processors
- unaffected ShimadaPeakPI-SP6 1.0.0.1c
AMD · AMD Ryzen™ Threadripper™ PRO 9000 WX-Series Processors
- unaffected ShimadaPeakPI-SP6 1.0.0.1c
AMD · AMD Ryzen™ 7000 Series Desktop Processors (formerly codenamed "Raphael")
- unaffected ComboAM5PI_1.3.0.0
AMD · AMD Ryzen™ 8000 Series Desktop Processors (formerly codenamed "Phoenix")
- unaffected ComboAM5PI_1.3.0.0
AMD · AMD Ryzen™ 9000 Series Desktop Processors (formerly codenamed "Granite Ridge")
- unaffected ComboAM5PI_1.3.0.0
AMD · AMD Ryzen™ Embedded 9000 Series Processors
- unaffected EmbeddedAM5PI 1.0.0.5
AMD · AMD Ryzen™ Embedded 8000 Series Processors
- unaffected EmbeddedPhoenixPI-FP7r2_1.0.0.4
AMD · AMD Ryzen™ Embedded 7000 Series Processors
- unaffected EmbeddedAM5PI 1.0.0.5
AMD · AMD EPYC™ 4004 Series Processors
- unaffected ComboAM5PI 1.0.0.d / ComboAM5PI 1.1.0.3f / ComboAM5PI_1.2.0.3i
AMD · AMD EPYC™ 4005 Series Processors
- unaffected ComboAM5PI_1.2.0.3i
References
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-30496 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-0438)Record last updated .