CVE-2021-26330: amd 1st gen amd epyc™ Heap-based Buffer Overflow
CVSS: 5.5v3.1MediumModified
Published 16-11-2021Last modified 16-09-2024
Vulnerability summary
CVE-2021-26330 is a medium (CVSS 5.5) Heap-based Buffer Overflow vulnerability in amd 1st gen amd epyc™. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 11.5% of scored vulnerabilities.
CVSS score
5.5/10
010
Medium · v3.1 (NVD)EPSS score
0.22%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 16-11-2021PublishedVulnerability first disclosed.
- 16-09-2024Last modifiedVulnerability information updated.
Description
AMD System Management Unit (SMU) may experience a heap-based overflow which may result in a loss of resources.
CVSS metrics
2 scores · 1 source · 2 versionsMedium 5.5Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HSourcesSingle source
Low 2.1Preferred score · NVD (NIST)
AV:L/AC:L/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
0.22%
Chance of exploitation in the next 30 days
Percentile
12%
Versus all other CVEs
30-day change
0.00 pp
From 0.22% on 20-09-2026
20-09-202620-10-2026
EPSS score0.22%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-122Heap-based Buffer OverflowA heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
Affected systems
Amd61 products
- 1st gen amd epyc™≥ unspecified, < NaplesPI-SP3_1.0.0.G
- 2nd gen amd epyc™≥ unspecified, < RomePI-SP3_1.0.0.C
- 3rd gen amd epyc™≥ unspecified, < MilanPI-SP3_1.0.0.4
- epyc_7001_firmware< naplespi-sp3_1.0.0.g
- epyc_7002_firmware< romepi-sp3_1.0.0.c
1 vendor · 61 products