{"cve":"CVE-2018-3639","nvd":{"published":"2018-05-22T12:29:00.250","modified":"2026-06-17T01:57:35.857","status":"Modified","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","score":5.5},"cwes":["CWE-203"],"references":["http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00058.html","http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00059.html","http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00007.html","http://support.lenovo.com/us/en/solutions/LEN-22133","http://www.fujitsu.com/global/support/products/software/security/products-f/cve-2018-3639e.html"],"products":["arm:cortex-a","canonical:ubuntu_linux","debian:debian_linux","intel:atom_c","intel:atom_e","intel:atom_x5-e3930","intel:atom_x5-e3940","intel:atom_x7-e3950","intel:atom_z","intel:celeron_j","intel:celeron_n","intel:core_i3","intel:core_i5","intel:core_i7","intel:core_m","intel:pentium","intel:pentium_j","intel:pentium_silver","intel:xeon_e-1105c","intel:xeon_e3","intel:xeon_e3_1105c_v2","intel:xeon_e3_1125c_v2","intel:xeon_e3_12201","intel:xeon_e3_12201_v2","intel:xeon_e3_1220_v2","intel:xeon_e3_1220_v3","intel:xeon_e3_1220_v5","intel:xeon_e3_1220_v6","intel:xeon_e3_1220l_v3","intel:xeon_e3_1225","intel:xeon_e3_1225_v2","intel:xeon_e3_1225_v3","intel:xeon_e3_1225_v5","intel:xeon_e3_1225_v6","intel:xeon_e3_1226_v3","intel:xeon_e3_1230","intel:xeon_e3_1230_v2","intel:xeon_e3_1230_v3","intel:xeon_e3_1230_v5","intel:xeon_e3_1230_v6","intel:xeon_e3_1230l_v3","intel:xeon_e3_1231_v3","intel:xeon_e3_1235","intel:xeon_e3_1235l_v5","intel:xeon_e3_1240","intel:xeon_e3_1240_v2","intel:xeon_e3_1240_v3","intel:xeon_e3_1240_v5","intel:xeon_e3_1240_v6","intel:xeon_e3_1240l_v3"],"source":"nvd","synced_at":"2026-10-19T20:50:40.212176939+00:00"},"epss":{"cve":"CVE-2018-3639","score":0.60421,"percentile":0.99143,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}