CVE-2023-20599
No known exploitation. EPSS puts it in the 7th percentile. No fix published yet.
What to do
No fixed build or workaround is published yet. Limit exposure and watch for a patch.
What it is
From the CVE record
Improper register access control in ASP may allow a privileged attacker to perform unauthorized access to ASP’s Crypto Co-Processor (CCP) registers from x86 resulting in potential loss of control of cryptographic key pointer/index leading to loss of integrity or confidentiality.
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
3 events over 164 days, from the signal feeds we watch.
- Record updated
- Publishedweakness classified
Affected products
- AMD EPYC™ 7002 Series ProcessorsHardware Firmware
- AMD Ryzen™ Threadripper™ 3000 ProcessorsHardware Firmware
- AMD Ryzen™ Threadripper™ PRO 3000 WX ProcessorsHardware Firmware
- AMD Ryzen™ 3000 Series Mobile Processors with Radeon™ GraphicsHardware Firmware
- AMD EPYC™ Embedded 7002 Series ProcessorsHardware Firmware
- AMD EPYC™ Embedded 7003 Series ProcessorsHardware Firmware
- AMD Ryzen™ Embedded R1000 Series ProcessorsHardware Firmware
- AMD Athlon™ 3000 Series Mobile Processors with Radeon™ GraphicsHardware Firmware
And 2 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:C/C:H/I:H/A:N
Scored 7.9 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 ChangedThe exploit can affect other components (e.g. sandbox escape, host compromise from VM)
Impact if exploited
- Confidentiality HighTotal information disclosure — all data in the component is compromised
- Integrity HighTotal loss of integrity — attacker can modify any data in the component
- Availability NoneNo availability impact
Weaknesses
Sources
References in the record
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