What’s Vulnerable › Vulnerabilities

CVE-2023-20577

• Severity: high (CVSS 7.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-02 · updated 2026-09-04
• Weakness: CWE-121

Description

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.

Affected products

• AMD 2nd Gen AMD EPYC™ Processors: all versions
• AMD 3rd Gen AMD EPYC™ Processors: all versions
• AMD 4th Gen AMD EPYC™ Processors: all versions
• AMD Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics: all versions
• AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics: all versions
• AMD EPYC™ Embedded 3000: all versions
• AMD EPYC™ Embedded 7002: all versions
• AMD EPYC™ Embedded 7003: all versions
• AMD EPYC™ Embedded 9003: all versions
• AMD Instinct™ MI300A: all versions
• AMD Ryzen™ 3000 Series Desktop Processors: all versions
• AMD Ryzen™ 3000 Series Mobile Processor with Radeon™ Graphics: all versions
• AMD Ryzen™ 3000 Series Processors with Radeon™ Graphics: all versions
• AMD Ryzen™ 4000 Series Desktop Processors with Radeon™ Graphics: all versions
• AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics: all versions
• AMD Ryzen™ 5000 Series Desktop Processors: all versions
• AMD Ryzen™ 5000 Series Desktop Processors with Radeon™ Graphics: all versions
• AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics: all versions
• AMD Ryzen™ 5000 Series Processors with Radeon™ Graphics: all versions
• AMD Ryzen™ 6000 Series Processors with Radeon™ Graphics: all versions
• AMD Ryzen™ 7000 Series Processors: all versions
• AMD Ryzen™ 7020 Series Processors with Radeon™ Graphics: all versions
• AMD Ryzen™ 7035 Series Processors with Radeon™ Graphics: all versions
• AMD Ryzen™ 7040 Series Processors with Radeon™ Graphics: all versions
• AMD Ryzen™ 7045 Series Mobile Processors: all versions
• AMD Ryzen™ Embedded 5000: all versions
• AMD Ryzen™ Embedded R1000: all versions
• AMD Ryzen™ Embedded R2000: all versions
• AMD Ryzen™ Embedded V1000: all versions
• AMD Ryzen™ Embedded V2000: all versions

References

• https://www.amd.com/en/resources/product-security/bulletin/amd-sb-7009.html

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