CVE-2023-20594
No known exploitation. EPSS puts it in the 7th percentile. A vendor fix is available.
What to do
The vendor has published a fix. Version details are below where the sources state them.
What it is
From the CVE record
Improper initialization of variables in the DXE driver may allow a privileged user to leak sensitive information via local access.
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
No public exploit or proof of concept found in the sources we track.
- EPSS
0.2% chance of exploitation activity in the next 30 days, which ranks it in the 7th percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
5 events over 646 days, from the signal feeds we watch.
- Patch availablerecord updated
- Publishedweakness classified, att&ck mapped
Affected products
- Ryzen™ 3000 Series Desktop Processors “Matisse”Hardware Firmware
- Ryzen™ 5000 Series Desktop Processors “Vermeer”Hardware Firmware
- Ryzen™ 5000 Series Desktop Processor with Radeon™ Graphics “Cezanne”Hardware Firmware
- Ryzen™ 4000 Series Desktop Processors with Radeon™ Graphics “Renoir” AM4Hardware Firmware
- Ryzen™ Threadripper™ 3000 Series Processors “Castle Peak” HEDTHardware Firmware
- Ryzen™ Threadripper™ PRO Processors “Castle Peak” WS SP3Hardware Firmware
- Ryzen™ Threadripper™ PRO 3000WX Series Processors “Chagall” WS SP3Hardware Firmware
- Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics “Renoir” FP6Hardware Firmware
And 134 more affected products. See all after sign-in
Technical detail
CVSS 3.1 vector
Open in the CVSS calculatorCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Scored 4.4 by NVD.
How it is reached
- Attack Vector LocalRequires local access to the vulnerable system (e.g. local login, malicious file)
- Attack Complexity LowNo special conditions — the attack can be reliably reproduced
- Privileges Required HighRequires admin or elevated privileges
- User Interaction NoneNo user interaction needed — fully automated exploitation
Scope
- Scope UnchangedImpact is limited to the vulnerable component itself
Impact if exploited
- Confidentiality HighTotal information disclosure — all data in the component is compromised
- Integrity NoneNo integrity impact
- Availability NoneNo availability impact
Weaknesses
ATT&CK techniques
Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.
- Privilege EscalationT1068Exploitation for Privilege Escalationlow confidence
Sources
References in the record
Watch the software you run.
My Stack ranks new CVEs for your products by real-world exploitation, so the next serious one reaches you without reading every advisory.
We'll flag the next CVE, public exploit or patch for AMD, not every advisory.
A free account adds
- The full version matrix and every affected product
- Exploit links, proofs of concept and Metasploit modules
- Email alerts for the products you watch
- The same data over REST API, MCP and CLI