CVE-2023-20577
A heap overflow in SMM module may allow an attacker with access to a second vulnerability that...
A heap overflow in SMM module may allow an attacker with access to a second vulnerability that enables writing to SPI flash, potentially resulting in arbitrary code execution.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
A heap overflow in SMM module may allow an attacker with access to a second vulnerability that enables writing to SPI flash, potentially resulting in arbitrary code execution.
- Record
CVE-2023-20577- CVSS 3.1
- 7.4 High
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-121
- Updated
- 2026-11-03
EUVDEUVD-2023-60617
A heap overflow in SMM module may allow an attacker with access to a second vulnerability that enables writing to SPI flash, potentially resulting in arbitrary code execution.
- Record
EUVD-2023-60617- CVSS 3.1
- 7.4 High
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-hp78-wv22-mhmg
A heap overflow in SMM module may allow an attacker with access to a second vulnerability that...
A heap overflow in SMM module may allow an attacker with access to a second vulnerability that enables writing to SPI flash, potentially resulting in arbitrary code execution.
- Record
GHSA-hp78-wv22-mhmg- CVSS 3.1
- 7.4 High
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-121
- Updated
- 2026-11-02
NVD
A heap overflow in SMM module may allow an attacker with access to a second vulnerability that enables writing to SPI flash, potentially resulting in arbitrary code execution.
- Record
CVE-2023-20577- CVSS 3.1
- 7.4 High
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-121
- Updated
- 2026-11-02
Affected products
- amd 2nd gen amd epyc™ processors
- amd 3rd gen amd epyc™ processors
- amd 4th gen amd epyc™ processors
- amd athlon™ 3000 series desktop processors with radeon™ graphics
- amd athlon™ 3000 series mobile processors with radeon™ graphics
- amd epyc™ embedded 3000
- amd epyc™ embedded 7002
- amd epyc™ embedded 7003
- amd epyc™ embedded 9003
- amd instinct™ mi300a
- amd ryzen™ 3000 series desktop processors
- amd ryzen™ 3000 series mobile processor with radeon™ graphics
Show 22 moreShow less
- amd ryzen™ 3000 series processors with radeon™ graphics
- amd ryzen™ 4000 series desktop processors with radeon™ graphics
- amd ryzen™ 4000 series mobile processors with radeon™ graphics
- amd ryzen™ 5000 series desktop processors
- amd ryzen™ 5000 series desktop processors with radeon™ graphics
- amd ryzen™ 5000 series mobile processors with radeon™ graphics
- amd ryzen™ 5000 series processors with radeon™ graphics
- amd ryzen™ 6000 series processors with radeon™ graphics
- amd ryzen™ 7000 series processors
- amd ryzen™ 7020 series processors with radeon™ graphics
- amd ryzen™ 7035 series processors with radeon™ graphics
- amd ryzen™ 7040 series processors with radeon™ graphics
- amd ryzen™ 7045 series mobile processors
- amd ryzen™ embedded 5000
- amd ryzen™ embedded r1000
- amd ryzen™ embedded r2000
- amd ryzen™ embedded v1000
- amd ryzen™ embedded v2000
- amd ryzen™ embedded v3000
- amd ryzen™ threadripper™ 3000 series processors
- amd ryzen™ threadripper™ pro 3000wx series processors
- amd ryzen™ threadripper™ pro 5000wx processors
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-20577 is a high vulnerability (CVSS 7.4) in Amd 2nd Gen Amd Epyc™ Processors, published September 2, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.15%, the 4th percentile. No source names a fixed version.