CVE-2023-20576
No known exploitation. EPSS puts it in the 2nd 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
Insufficient Verification of Data Authenticity in AGESA™ may allow an attacker to update SPI ROM data potentially resulting in denial of service or privilege escalation.
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
0.1% chance of exploitation activity in the next 30 days, which ranks it in the 2nd percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
10 events over 2 days, from the signal feeds we watch.
- Record updated
- Record updatedrecord updated
- Publishedpublished, weakness classified, weakness classified, att&ck mapped, att&ck mapped, record updated
Affected products
- AMD Ryzen™ 3000 Series Desktop ProcessorsHardware Firmware
- AMD Ryzen™ 5000 Series Desktop ProcessorsHardware Firmware
- AMD Ryzen™ 5000 Series Desktop Processors with Radeon™ GraphicsHardware Firmware
- AMD Ryzen™ 7000 Series ProcessorsHardware Firmware / cpu-gpu
- AMD Ryzen™ 4000 Series Desktop Processors with Radeon™ GraphicsHardware Firmware
- AMD Ryzen™ Threadripper™ PRO 5000WX ProcessorsHardware Firmware
- AMD Ryzen™ 7020 Series Processors with Radeon™ GraphicsHardware Firmware
- AMD Ryzen™ 6000 Series Processors with Radeon™ GraphicsHardware Firmware
And 5 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:N/UI:N/S:U/C:H/I:N/A:H
Scored 7.7 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 NoneNo authentication required — anyone can exploit this
- 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 HighTotal denial of service — the component is completely unavailable
Weaknesses
ATT&CK techniques
Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.
Sources
References in the record
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