CVE-2018-3620

Systems with microprocessors utilizing speculative execution and address translations may allow unauthorized disclosure of information residing in the L1 data cache to an attacker with local user access via a terminal page fault and a side-channel analysis.

Published: 2018-08-14 Last update: 2026-05-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-3620 is rated Moderate Risk (57.8/100): CVSS Medium severity, with high exploitation likelihood (EPSS 5.58%, 92th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +3.26% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2018-3620

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 2.32% 5.58% +3.26%
2 2026-04-21 3.04% 2.32% -0.72%
3 2026-02-19 — 3.04% —

Full EPSS history (24 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-3620

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.6 3.1 MEDIUM
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 1.1 4.0 134c704f-9b21-4f2e-91b3-4a467353bcc0
5.6 3.0 MEDIUM
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 1.1 4.0 [email protected]
4.7 2.0 MEDIUM
AV:L/AC:M/Au:N/C:C/I:N/A:N Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 3.4 6.9 [email protected]

Weakness enumeration for CVE-2018-3620

GitHub Security Advisory for CVE-2018-3620

GHSA-h9mf-j5vf-pc99 · Severity: medium — Systems with microprocessors utilizing speculative execution and address translations may allow...

OS Trackers for CVE-2018-3620

vendor priority summary link
alpine medium CVE-2018-3620: 1 source package rows (xen); 10 state rows across 10 repos (3.10-main, 3.11-main, 3.12-main, 3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 10, open 0. https://security.alpinelinux.org/vuln/CVE-2018-3620
debian not yet assigned CVE-2018-3620 not yet assigned priority: Debian including 3 source packages (intel-microcode, linux, xen), 15 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 15. https://security-tracker.debian.org/tracker/CVE-2018-3620
gentoo normal CVE-2018-3620: 1 GLSA(s) (201810-06), 2 atom(s) (app-emulation/xen, app-emulation/xen-tools); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2018-3620
redhat high — https://access.redhat.com/security/cve/CVE-2018-3620
suse medium CVE-2018-3620 severity moderate: SUSE including 296 source package names (cluster-md-kmp-azure-4.12.14-5.13.1, cluster-md-kmp-default-4.12.14-120.1, …), 546 product×package rows across 78 product lines (SUSE CaaS Platform 3.0, SUSE CaaS Platform 4.0, … (78 product lines)): Fixed 476, Known Not Affected 70. https://www.suse.com/security/cve/CVE-2018-3620/
ubuntu high CVE-2018-3620 high priority: Ubuntu including 78 source packages (linux, linux-aws, …), 630 status rows across 10 suites (bionic, cosmic, disco, focal, jammy, noble, oracular, trusty, upstream, xenial): DNE 398, not-affected 132, released 89, ignored 11. https://ubuntu.com/security/CVE-2018-3620

Affected software / configurations for CVE-2018-3620

Vendor Product Version Raw CPE
intel core_i3 330e cpe:2.3:h:intel:core_i3:330e:*:*:*:*:*:*:*
intel core_i3 330m cpe:2.3:h:intel:core_i3:330m:*:*:*:*:*:*:*
intel core_i3 330um cpe:2.3:h:intel:core_i3:330um:*:*:*:*:*:*:*
intel core_i3 350m cpe:2.3:h:intel:core_i3:350m:*:*:*:*:*:*:*
intel core_i3 370m cpe:2.3:h:intel:core_i3:370m:*:*:*:*:*:*:*
intel core_i3 380m cpe:2.3:h:intel:core_i3:380m:*:*:*:*:*:*:*
intel core_i3 380um cpe:2.3:h:intel:core_i3:380um:*:*:*:*:*:*:*
intel core_i3 390m cpe:2.3:h:intel:core_i3:390m:*:*:*:*:*:*:*
intel core_i3 530 cpe:2.3:h:intel:core_i3:530:*:*:*:*:*:*:*
intel core_i3 540 cpe:2.3:h:intel:core_i3:540:*:*:*:*:*:*:*
intel core_i3 550 cpe:2.3:h:intel:core_i3:550:*:*:*:*:*:*:*
intel core_i3 560 cpe:2.3:h:intel:core_i3:560:*:*:*:*:*:*:*
intel core_i3 2100 cpe:2.3:h:intel:core_i3:2100:*:*:*:*:*:*:*
intel core_i3 2100t cpe:2.3:h:intel:core_i3:2100t:*:*:*:*:*:*:*
intel core_i3 2102 cpe:2.3:h:intel:core_i3:2102:*:*:*:*:*:*:*
intel core_i3 2105 cpe:2.3:h:intel:core_i3:2105:*:*:*:*:*:*:*
intel core_i3 2115c cpe:2.3:h:intel:core_i3:2115c:*:*:*:*:*:*:*
intel core_i3 2120 cpe:2.3:h:intel:core_i3:2120:*:*:*:*:*:*:*
intel core_i3 2120t cpe:2.3:h:intel:core_i3:2120t:*:*:*:*:*:*:*
intel core_i3 2125 cpe:2.3:h:intel:core_i3:2125:*:*:*:*:*:*:*
intel core_i3 2130 cpe:2.3:h:intel:core_i3:2130:*:*:*:*:*:*:*
intel core_i3 2310e cpe:2.3:h:intel:core_i3:2310e:*:*:*:*:*:*:*
intel core_i3 2310m cpe:2.3:h:intel:core_i3:2310m:*:*:*:*:*:*:*
intel core_i3 2312m cpe:2.3:h:intel:core_i3:2312m:*:*:*:*:*:*:*
intel core_i3 2328m cpe:2.3:h:intel:core_i3:2328m:*:*:*:*:*:*:*
intel core_i3 2330e cpe:2.3:h:intel:core_i3:2330e:*:*:*:*:*:*:*
intel core_i3 2330m cpe:2.3:h:intel:core_i3:2330m:*:*:*:*:*:*:*
intel core_i3 2340ue cpe:2.3:h:intel:core_i3:2340ue:*:*:*:*:*:*:*
intel core_i3 2348m cpe:2.3:h:intel:core_i3:2348m:*:*:*:*:*:*:*
intel core_i3 2350m cpe:2.3:h:intel:core_i3:2350m:*:*:*:*:*:*:*
intel core_i3 2357m cpe:2.3:h:intel:core_i3:2357m:*:*:*:*:*:*:*
intel core_i3 2365m cpe:2.3:h:intel:core_i3:2365m:*:*:*:*:*:*:*
intel core_i3 2367m cpe:2.3:h:intel:core_i3:2367m:*:*:*:*:*:*:*
intel core_i3 2370m cpe:2.3:h:intel:core_i3:2370m:*:*:*:*:*:*:*
intel core_i3 2375m cpe:2.3:h:intel:core_i3:2375m:*:*:*:*:*:*:*
intel core_i3 2377m cpe:2.3:h:intel:core_i3:2377m:*:*:*:*:*:*:*
intel core_i3 3110m cpe:2.3:h:intel:core_i3:3110m:*:*:*:*:*:*:*
intel core_i3 3115c cpe:2.3:h:intel:core_i3:3115c:*:*:*:*:*:*:*
intel core_i3 3120m cpe:2.3:h:intel:core_i3:3120m:*:*:*:*:*:*:*
intel core_i3 3120me cpe:2.3:h:intel:core_i3:3120me:*:*:*:*:*:*:*
intel core_i3 3130m cpe:2.3:h:intel:core_i3:3130m:*:*:*:*:*:*:*
intel core_i3 3210 cpe:2.3:h:intel:core_i3:3210:*:*:*:*:*:*:*
intel core_i3 3217u cpe:2.3:h:intel:core_i3:3217u:*:*:*:*:*:*:*
intel core_i3 3217ue cpe:2.3:h:intel:core_i3:3217ue:*:*:*:*:*:*:*
intel core_i3 3220 cpe:2.3:h:intel:core_i3:3220:*:*:*:*:*:*:*
intel core_i3 3220t cpe:2.3:h:intel:core_i3:3220t:*:*:*:*:*:*:*
intel core_i3 3225 cpe:2.3:h:intel:core_i3:3225:*:*:*:*:*:*:*
intel core_i3 3227u cpe:2.3:h:intel:core_i3:3227u:*:*:*:*:*:*:*
intel core_i3 3229y cpe:2.3:h:intel:core_i3:3229y:*:*:*:*:*:*:*
intel core_i3 3240 cpe:2.3:h:intel:core_i3:3240:*:*:*:*:*:*:*
intel core_i3 3240t cpe:2.3:h:intel:core_i3:3240t:*:*:*:*:*:*:*
intel core_i3 3245 cpe:2.3:h:intel:core_i3:3245:*:*:*:*:*:*:*
intel core_i3 3250 cpe:2.3:h:intel:core_i3:3250:*:*:*:*:*:*:*
intel core_i3 3250t cpe:2.3:h:intel:core_i3:3250t:*:*:*:*:*:*:*
intel core_i3 4000m cpe:2.3:h:intel:core_i3:4000m:*:*:*:*:*:*:*
intel core_i3 4005u cpe:2.3:h:intel:core_i3:4005u:*:*:*:*:*:*:*
intel core_i3 4010u cpe:2.3:h:intel:core_i3:4010u:*:*:*:*:*:*:*
intel core_i3 4010y cpe:2.3:h:intel:core_i3:4010y:*:*:*:*:*:*:*
intel core_i3 4012y cpe:2.3:h:intel:core_i3:4012y:*:*:*:*:*:*:*
intel core_i3 4020y cpe:2.3:h:intel:core_i3:4020y:*:*:*:*:*:*:*
intel core_i3 4025u cpe:2.3:h:intel:core_i3:4025u:*:*:*:*:*:*:*
intel core_i3 4030u cpe:2.3:h:intel:core_i3:4030u:*:*:*:*:*:*:*
intel core_i3 4030y cpe:2.3:h:intel:core_i3:4030y:*:*:*:*:*:*:*
intel core_i3 4100e cpe:2.3:h:intel:core_i3:4100e:*:*:*:*:*:*:*
intel core_i3 4100m cpe:2.3:h:intel:core_i3:4100m:*:*:*:*:*:*:*
intel core_i3 4100u cpe:2.3:h:intel:core_i3:4100u:*:*:*:*:*:*:*
intel core_i3 4102e cpe:2.3:h:intel:core_i3:4102e:*:*:*:*:*:*:*
intel core_i3 4110e cpe:2.3:h:intel:core_i3:4110e:*:*:*:*:*:*:*
intel core_i3 4110m cpe:2.3:h:intel:core_i3:4110m:*:*:*:*:*:*:*
intel core_i3 4112e cpe:2.3:h:intel:core_i3:4112e:*:*:*:*:*:*:*
intel core_i3 4120u cpe:2.3:h:intel:core_i3:4120u:*:*:*:*:*:*:*
intel core_i3 4130 cpe:2.3:h:intel:core_i3:4130:*:*:*:*:*:*:*
intel core_i3 4130t cpe:2.3:h:intel:core_i3:4130t:*:*:*:*:*:*:*
intel core_i3 4150 cpe:2.3:h:intel:core_i3:4150:*:*:*:*:*:*:*
intel core_i3 4150t cpe:2.3:h:intel:core_i3:4150t:*:*:*:*:*:*:*
intel core_i3 4158u cpe:2.3:h:intel:core_i3:4158u:*:*:*:*:*:*:*
intel core_i3 4160 cpe:2.3:h:intel:core_i3:4160:*:*:*:*:*:*:*
intel core_i3 4160t cpe:2.3:h:intel:core_i3:4160t:*:*:*:*:*:*:*
intel core_i3 4170 cpe:2.3:h:intel:core_i3:4170:*:*:*:*:*:*:*
intel core_i3 4170t cpe:2.3:h:intel:core_i3:4170t:*:*:*:*:*:*:*

References for CVE-2018-3620

URL Tags
http://support.lenovo.com/us/en/solutions/LEN-24163 Third Party Advisory
http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20180815-01-cpu-en Third Party Advisory
http://www.securityfocus.com/bid/105080 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1041451 Third Party Advisory VDB Entry
http://www.vmware.com/security/advisories/VMSA-2018-0021.html Third Party Advisory
http://xenbits.xen.org/xsa/advisory-273.html Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2384 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2387 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2388 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2389 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2390 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2391 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2392 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2393 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2394 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2395 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2396 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2402 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2403 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2404 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2602
https://access.redhat.com/errata/RHSA-2018:2603
https://cert-portal.siemens.com/productcert/pdf/ssa-254686.pdf
https://cert-portal.siemens.com/productcert/pdf/ssa-608355.pdf
https://foreshadowattack.eu/ Technical Description Third Party Advisory
https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0
https://lists.debian.org/debian-lts-announce/2018/08/msg00029.html
https://lists.debian.org/debian-lts-announce/2018/09/msg00017.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V4UWGORQWCENCIF2BHWUEF2ODBV75QS2/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XRFKQWYV2H4BV75CUNGCGE5TNVQCLBGZ/
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/ADV180018
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0009 Third Party Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-18:09.l1tf.asc Third Party Advisory
https://security.gentoo.org/glsa/201810-06
https://security.netapp.com/advisory/ntap-20180815-0001/ Third Party Advisory
https://software.intel.com/security-software-guidance/software-guidance/l1-terminal-fault Mitigation Vendor Advisory
https://support.f5.com/csp/article/K95275140 Third Party Advisory
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03874en_us Third Party Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180814-cpusidechannel Third Party Advisory
https://usn.ubuntu.com/3740-1/ Third Party Advisory
https://usn.ubuntu.com/3740-2/ Third Party Advisory
https://usn.ubuntu.com/3741-1/ Third Party Advisory
https://usn.ubuntu.com/3741-2/
https://usn.ubuntu.com/3742-1/ Third Party Advisory
https://usn.ubuntu.com/3742-2/ Third Party Advisory
https://usn.ubuntu.com/3823-1/
https://www.debian.org/security/2018/dsa-4274
https://www.debian.org/security/2018/dsa-4279
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00161.html Vendor Advisory
https://www.kb.cert.org/vuls/id/982149
https://www.oracle.com/security-alerts/cpujul2020.html
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
https://www.synology.com/support/security/Synology_SA_18_45 Third Party Advisory
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