CVE-2018-8933
CVE-2018-8933 is a critical-severity vulnerability in Amd Epyc Server Firmware with a CVSS 3.x base score of 9.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-732.
Key facts
- Severity: Critical (CVSS 3.x base score 9.0)
- CVSS v2: 9.3
- EPSS exploit prediction: 2% (75th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-732
- Affected product: Amd Epyc Server Firmware
- Published:
- Last modified:
Description
The AMD EPYC Server processor chips have insufficient access control for protected memory regions, aka FALLOUT-1, FALLOUT-2, and FALLOUT-3.
Frequently asked questions
- What is CVE-2018-8933?
- The AMD EPYC Server processor chips have insufficient access control for protected memory regions, aka FALLOUT-1, FALLOUT-2, and FALLOUT-3.
- How severe is CVE-2018-8933?
- CVE-2018-8933 has a CVSS 3.x base score of 9.0, rated critical severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2018-8933 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-8933?
- CVE-2018-8933 affects Amd Epyc Server Firmware. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2018-8933?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2018-8933 published?
- CVE-2018-8933 was published on 2018-03-22 and last updated on 2026-06-17.
References
- https://amdflaws.com/
- https://blog.trailofbits.com/2018/03/15/amd-flaws-technical-summary/
- https://community.amd.com/community/amd-corporate/blog/2018/03/21/initial-amd-technical-assessment-of-cts-labs-research
- https://safefirmware.com/amdflaws_whitepaper.pdf
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03841en_us
Affected products (1)
- cpe:2.3:o:amd:epyc_server_firmware:-:*:*:*:*:*:*:*
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