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CVE-2020-0549

16
FAUCET Score

CVE-2020-0549 is a medium-severity vulnerability affecting Intel processors, as well as various Linux distributions including Canonical, Debian, Fedora, and openSUSE. It involves cleanup errors in data cache evictions that could allow an authenticated local user to potentially disclose sensitive information. The CVSS score is 5.5, indicating a local attack vector with low complexity and a high impact on confidentiality. There is no evidence of active exploitation, and no public exploit code is available in Metasploit, Nuclei, or ExploitDB. Despite this, the vulnerability has garnered significant community discussion and media coverage, including articles detailing Intel's June 2020 platform updates and speculative execution attacks like CacheOut/L1DES.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:intel:core_i7-8700b_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:intel:core_i7-8569u_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:intel:core_i7_8650u_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:intel:core_i7_8565u_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:intel:core_i7_8560u_firmware:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.59%
Probability of exploitation in next 30 days
EPSS Percentile
44.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0059 is in the 94th percentile among its peer group of 15,937 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (29)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: microcode_ctl-2:1.17-33.26.el6_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6.5 Advanced Update SupportFixed in: microcode_ctl-2:1.17-17.31.el6_5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6.6 Advanced Update SupportFixed in: microcode_ctl-2:1.17-19.29.el6_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: microcode_ctl-2:2.1-61.6.el7_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: microcode_ctl-2:2.1-73.11.el7_9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.2 Advanced Update SupportFixed in: microcode_ctl-2:2.1-12.30.el7_2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.2 Advanced Update SupportFixed in: microcode_ctl-2:2.1-12.39.el7_2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.3 Advanced Update SupportFixed in: microcode_ctl-2:2.1-16.33.el7_3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.3 Advanced Update SupportFixed in: microcode_ctl-2:2.1-16.42.el7_3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.3 Telco Extended Update SupportFixed in: microcode_ctl-2:2.1-16.33.el7_3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.3 Update Services for SAP SolutionsFixed in: microcode_ctl-2:2.1-16.33.el7_3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.4 Advanced Update SupportFixed in: microcode_ctl-2:2.1-22.32.el7_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.4 Advanced Update SupportFixed in: microcode_ctl-2:2.1-22.41.el7_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.4 Telco Extended Update SupportFixed in: microcode_ctl-2:2.1-22.32.el7_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.4 Telco Extended Update SupportFixed in: microcode_ctl-2:2.1-22.41.el7_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.4 Update Services for SAP SolutionsFixed in: microcode_ctl-2:2.1-22.32.el7_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.4 Update Services for SAP SolutionsFixed in: microcode_ctl-2:2.1-22.41.el7_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.6 Advanced Update Support(Disable again in 2026 - SPRHEL-7118)Fixed in: microcode_ctl-2:2.1-47.23.el7_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.6 Extended Update SupportFixed in: microcode_ctl-2:2.1-47.14.el7_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.6 Telco Extended Update SupportFixed in: microcode_ctl-2:2.1-47.23.el7_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.6 Update Services for SAP SolutionsFixed in: microcode_ctl-2:2.1-47.23.el7_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.7 Extended Update SupportFixed in: microcode_ctl-2:2.1-53.9.el7_7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.7 Extended Update SupportFixed in: microcode_ctl-2:2.1-53.18.el7_7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: microcode_ctl-4:20191115-4.20200602.2.el8_2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: microcode_ctl-4:20210216-1.20210608.1.el8_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.0 Update Services for SAP SolutionsFixed in: microcode_ctl-4:20180807a-2.20200609.1.el8_0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.1 Extended Update SupportFixed in: microcode_ctl-4:20190618-1.20200609.1.el8_1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.1 Extended Update SupportFixed in: microcode_ctl-4:20190618-1.20210608.1.el8_1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.2 Extended Update SupportFixed in: microcode_ctl-4:20191115-4.20210608.1.el8_2
View patch

Vendor Advisories (1)

redhatCVE-2020-0549Moderate

hw: L1D Cache Eviction Sampling

Jan 27, 2020

References

lists.opensuse.org / opensuse-security-announce/2020-06/msg00016.html
Mailing ListThird Party Advisory
kc.mcafee.com / corporate/index
Broken Link
lists.debian.org / debian-lts-announce/2020/06/msg00019.html
Mailing ListThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/DT2VKDMQ3I37NBNJ256A2EXR7OJHXXKZ
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/T5OUM24ZC43G4IDT3JUCIHJTSDXJSK6Y
security.netapp.com / advisory/ntap-20200210-0004
Third Party Advisory
usn.ubuntu.com / 4385-1
Third Party Advisory
debian.org / security/2020/dsa-4701
Third Party Advisory
intel.com / content/www/us/en/security-center/advisory/intel-sa-00329.html
Vendor Advisory