AMD Graphics Driver: Out-of-bounds write due to uninitialized state
Summary
An uninitialized or invalid state in the AMD Graphics Driver can lead to a write outside the intended memory area. According to the CNA's description, a local attacker could affect integrity or cause a denial of service. The CVE record lists AMD Ryzen Embedded R1000, R2000, V1000 and V2000 series processors; the CVSS 4.0 vector indicates only low availability impact for the vulnerable system. The CVSS vector also conflicts with the local-attacker description, so the attack path is not yet clear.
Affected
- AMD Ryzen Embedded R1000 Series Processors
- AMD Ryzen Embedded R2000 Series Processors
- AMD Ryzen Embedded V1000 Series Processors (Raven Ridge and Picasso)
- AMD Ryzen Embedded V2000 Series Processors
- The CVE record marks one platform entry as unaffected at Q4 2026 in the Windows Catalyst driver release notes; the exact scope is unclear.
Fixed in
Unknown. Check AMD-SB-4026 for fixed driver versions.
Workaround
Unknown. Restrict local logon and limit who can run code on affected devices until AMD's bulletin has been checked.
Exploitation
- No evidence of exploitation in the wild.
- Not listed in CISA KEV.
- No public proof of concept found.
Our recommendation
- Inventory any AMD Ryzen Embedded devices and their Windows graphics driver versions.
- Check AMD-SB-4026 for the fixed driver and apply it.
- Restrict local access and check whether affected devices are reachable from the network or shared with untrusted users.
- Monitor the bulletin and NVD for updates.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- CVE Record CVE-2026-48479 www.cve.org
- AMD Security Bulletin AMD-SB-4026 www.amd.com
- AMD Product Security www.amd.com
- Strix CVE Tracker www.strix.ai
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 11 Nov 2026, 15:27.
Original description (NVD)
Use of uninitialized or invalid state in AMD Graphics Driver could allow a local attacker to write out of bounds, potentially resulting in loss of integrity or denial of service.
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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