CVE-2021-26312: amd athlon™ series Improper Initialization
Vulnerability summary
CVE-2021-26312 is a medium (CVSS 5.5) Improper Initialization vulnerability in amd athlon™ series. EPSS estimates a 0.25% chance of exploitation in the next 30 days, higher than 16% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 5 · Related 5Timeline
- 16-11-2021PublishedVulnerability first disclosed.
- 16-09-2024Last modifiedVulnerability information updated.
Description
Failure to flush the Translation Lookaside Buffer (TLB) of the I/O memory management unit (IOMMU) may lead an IO device to write to memory it should not be able to access, resulting in a potential loss of integrity.
CVSS metrics
2 scores · 1 source · 2 versionsEPSS trend
Probability
0.25%
Chance of exploitation in the next 30 days
Percentile
16%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.25% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Amd60 products
- athlon™ seriesvarious
- epyc_7232p_firmware< romepi-sp3_1.0.0.c
- epyc_7251_firmware< naplespi-sp3_1.0.0.g
- epyc_7252_firmware< romepi-sp3_1.0.0.c
- epyc_7261_firmware< naplespi-sp3_1.0.0.g
1 vendor · 60 products
References
2 links- www.amd.com/en/corporate/product-security/bulletin/amd-sb-1027X Refsource MISC
- www.amd.com/en/corporate/product-security/bulletin/amd-sb-1028X Refsource MISC