CVE-2018-3639
Systems with microprocessors utilizing speculative execution and speculative execution of memory reads before the addresses of all prior memory writes are...
- Published
- May 22, 2018
- Updated
- May 29, 2026
- Assigning CNA
- intel
- Evidence observed
- May 22, 2018
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:NHigh · next 30 days
- Percentile
- 99.1%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
Systems with microprocessors utilizing speculative execution and speculative execution of memory reads before the addresses of all prior memory writes are known may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis, aka Speculative Store Bypass (SSB), Variant 4.
Sources
3Speculative Store Bypass (CVE-2018-3639) proof of concept for Linux
spectre v4 : Speculative Store Bypass (CVE-2018-3639) proof of concept for Linux
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