Is CVE-2018-3665 being actively exploited?

CVE-2018-3665 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2018-3665?

CVE-2018-3665 has a CVSS 3.1 base score of 5.6 (MEDIUM).

CVE-2018-3665

MEDIUM · CVSS 5.6EPSS 0.6%EU EUVD

System software utilizing Lazy FP state restore technique on systems using Intel Core-based microprocessors may potentially allow a local process to infer data from another process through a speculative execution side channel.

Key facts

CVSS score: 5.6 (v3.1)
Severity: MEDIUM
CVSS vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
Weakness (CWE): CWE-200
EPSS score: 0.6% (49th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2018-15519)
Published: June 21, 2018
NVD last modified: June 17, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2018-15519 in the EU Vulnerability Database. Last updated in EUVD on September 17, 2024.

View on the EU Vulnerability Database

Affected products

canonical / ubuntu linux
canonical / ubuntu linux
canonical / ubuntu linux
citrix / xenserver
citrix / xenserver
citrix / xenserver
citrix / xenserver
citrix / xenserver
debian / debian linux
debian / debian linux
freebsd / freebsd
freebsd / freebsd
freebsd / freebsd
intel / core i3
intel / core i3
intel / core i3
intel / core i3
intel / core i3
intel / core i3
intel / core i3
intel / core i3
intel / core i3
intel / core i3
intel / core i3
intel / core i3
intel / core i3
intel / core i3
intel / core i3
intel / core i3
intel / core i3
intel / core i3
intel / core i3
intel / core i3
intel / core i3
intel / core i3
intel / core i3
intel / core i3
intel / core i3
intel / core i3
intel / core i3
intel / core i3
intel / core i3
intel / core i3
intel / core i3
intel / core i3
intel / core i3
intel / core i3
intel / core i3
intel / core i3
intel / core i3

and 431 more…

Certified products that may be affected

1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.

Citrix XenServer ® 7.1 LTSR Enterprise Edition (CU2) - Citrix Systems, Inc. - Common Criteria 383-4-467 - archived

References

http://www.securityfocus.com/bid/104460(Third Party Advisory, VDB Entry)
http://www.securitytracker.com/id/1041124(Third Party Advisory, VDB Entry)
http://www.securitytracker.com/id/1041125(Third Party Advisory, VDB Entry)
https://access.redhat.com/errata/RHSA-2018:1852(Third Party Advisory)
https://access.redhat.com/errata/RHSA-2018:1944(Third Party Advisory)
https://access.redhat.com/errata/RHSA-2018:2164(Third Party Advisory)
https://access.redhat.com/errata/RHSA-2018:2165(Third Party Advisory)
https://access.redhat.com/errata/RHSA-2019:1170(Third Party Advisory)
https://access.redhat.com/errata/RHSA-2019:1190(Third Party Advisory)
https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0(Third Party Advisory)
https://lists.debian.org/debian-lts-announce/2018/07/msg00015.html(Third Party Advisory)
https://lists.debian.org/debian-lts-announce/2018/07/msg00016.html(Third Party Advisory)
https://nvidia.custhelp.com/app/answers/detail/a_id/4787(Third Party Advisory)
https://security.FreeBSD.org/advisories/FreeBSD-SA-18:07.lazyfpu.asc(Third Party Advisory)
https://security.netapp.com/advisory/ntap-20181016-0001/(Third Party Advisory)
https://security.paloaltonetworks.com/CVE-2018-3665(Third Party Advisory)
https://support.citrix.com/article/CTX235745(Third Party Advisory)
https://usn.ubuntu.com/3696-1/(Third Party Advisory)
https://usn.ubuntu.com/3696-2/(Third Party Advisory)
https://usn.ubuntu.com/3698-1/(Third Party Advisory)
https://usn.ubuntu.com/3698-2/(Third Party Advisory)
https://www.debian.org/security/2018/dsa-4232(Third Party Advisory)
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00145.html(Vendor Advisory)
https://www.oracle.com/security-alerts/cpujul2020.html(Third Party Advisory)
https://www.synology.com/support/security/Synology_SA_18_31(Third Party Advisory)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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