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CVE-2018-3693

24
FAUCET Score

CVE-2018-3693 is a speculative execution side-channel vulnerability affecting microprocessors from vendors like ARM, Intel, and Fujitsu, allowing local attackers to disclose sensitive information. With a CVSS score of 5.6 (Medium), it requires local user access and high attack complexity, but can lead to high confidentiality impact. While not listed in CISA KEV and lacking public exploit code in Metasploit or ExploitDB, it has garnered significant community discussion and media coverage, indicating notable awareness despite its inactive Hot List status.

Impacted Technologies

VendorProductVersion(s)CPE
c2308CPE matchmatch criteria
cpe:2.3:h:intel:atom_c:c2308:*:*:*:*:*:*:*
c2316CPE matchmatch criteria
cpe:2.3:h:intel:atom_c:c2316:*:*:*:*:*:*:*
c2338CPE matchmatch criteria
cpe:2.3:h:intel:atom_c:c2338:*:*:*:*:*:*:*
c2350CPE matchmatch criteria
cpe:2.3:h:intel:atom_c:c2350:*:*:*:*:*:*:*
c2358CPE matchmatch criteria
cpe:2.3:h:intel:atom_c:c2358:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.6MEDIUM

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.1
Impact Score
4.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
8.42%
Probability of exploitation in next 30 days
EPSS Percentile
94.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0842 is in the 99th percentile among its peer group of 1,295 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.4 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (8)

oraclepatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: kernel-0:2.6.32-754.3.5.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-rt-0:3.10.0-862.11.6.rt56.819.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-0:3.10.0-862.11.6.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-alt-0:4.14.0-115.17.1.el7a
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.4 Extended Update SupportFixed in: kernel-0:3.10.0-693.55.1.el7
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: kernel
redhatno patchvia redhat_api
Product: Red Hat Enterprise MRG 2Fixed in: kernel-rt

Vendor Advisories (1)

redhatCVE-2018-3693Important

Kernel: speculative bounds check bypass store

Jul 10, 2018

References

access.redhat.com / errata/RHSA-2018:2384
Third Party Advisory
access.redhat.com / errata/RHSA-2018:2390
Third Party Advisory
access.redhat.com / errata/RHSA-2018:2395
Third Party Advisory
access.redhat.com / errata/RHSA-2019:1946
Third Party Advisory
access.redhat.com / errata/RHSA-2020:0174
Third Party Advisory
cdrdv2.intel.com / v1/dl/getContent/685359
Third Party Advisory
help.ecostruxureit.com / display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0
Third Party Advisory
security.netapp.com / advisory/ntap-20180823-0001
Third Party Advisory
oracle.com / security-alerts/cpujul2020.html
PatchThird Party Advisory
oracle.com / security-alerts/cpuoct2020.html
PatchThird Party Advisory
oracle.com / technetwork/security-advisory/cpuapr2019-5072813.html
PatchThird Party Advisory