CVE-2023-20577CWE-121

CVE-2023-20577

High · published September 3, 2026

CVSS v3.1
7.4
EPSS
0%
Percentile
4.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.4 · HIGH
Vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00160 · 4.7th percentile
Weakness
CWE-121 · Stack-based Buffer Overflow
Published
2026-09-03T00:17Z
References (1)
https://www.amd.com/en/resources/product-security/bulletin/amd-sb-7009.html · [email protected]
EPSS history
Timeline
  • 04 SEP 03:23Z
    EPSS moved — → 0%
    epss
  • 02 SEP 19:57Z
    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…
    cvelistv5