MEDIUM
CVE-2020-0543
CWE-459Published: June 15, 2020· Updated: Jun 17, 2026
5.5
CVSS v3.1
Official Description
Incomplete cleanup from specific special register read operations in some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.
Technical Analysis
CVE-2020-0543 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 5.5.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Affected Vendors & Products
Canonical1 product(s)
ubuntu linux
Fedora1 product(s)
fedora
intel665 product(s)
celeron 1000mceleron 1005mceleron 1007uceleron 1017uceleron 1019yceleron 1020eceleron 1020mceleron 1037uceleron 1047ueceleron 2955uceleron 2957uceleron 2970m+653
mcafee1 product(s)
threat intelligence exchange server
openSUSE1 product(s)
leap
siemens50 product(s)
simatic field pg m4 firmwaresimatic field pg m4simatic field pg m5 firmwaresimatic field pg m5simatic field pg m6 firmwaresimatic field pg m6simatic ipc347e firmwaresimatic ipc347esimatic ipc427d firmwaresimatic ipc427dsimatic ipc427e firmwaresimatic ipc427e+38
Source: NVD CPE · 727 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
ADVISORYhttps://usn.ubuntu.com/4385-1/
ADVISORYhttps://usn.ubuntu.com/4387-1/
ADVISORYhttps://usn.ubuntu.com/4388-1/
ADVISORYhttps://usn.ubuntu.com/4389-1/
ADVISORYhttps://usn.ubuntu.com/4390-1/
ADVISORYhttps://usn.ubuntu.com/4391-1/
ADVISORYhttps://usn.ubuntu.com/4392-1/
ADVISORYhttps://usn.ubuntu.com/4393-1/
ADVISORYhttps://usn.ubuntu.com/4385-1/
ADVISORYhttps://usn.ubuntu.com/4387-1/
ADVISORYhttps://usn.ubuntu.com/4388-1/
ADVISORYhttps://usn.ubuntu.com/4389-1/
ADVISORYhttps://usn.ubuntu.com/4390-1/
ADVISORYhttps://usn.ubuntu.com/4391-1/
ADVISORYhttps://usn.ubuntu.com/4392-1/
ADVISORYhttps://usn.ubuntu.com/4393-1/
All References (38)
→
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00025.htmlMailing List · Third Party Advisory
→
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00024.htmlMailing List · Third Party Advisory
→
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00031.htmlMailing List · Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2020/07/14/5Mailing List · Third Party Advisory
→
https://cert-portal.siemens.com/productcert/pdf/ssa-534763.pdfThird Party Advisory
→
https://kc.mcafee.com/corporate/index?page=content&id=SB10318Third Party Advisory
→
https://usn.ubuntu.com/4385-1/Third Party Advisory
→
https://usn.ubuntu.com/4387-1/Third Party Advisory
→
https://usn.ubuntu.com/4388-1/Third Party Advisory
→
https://usn.ubuntu.com/4389-1/Third Party Advisory
→
https://usn.ubuntu.com/4390-1/Third Party Advisory
Quick Facts
CVE IDCVE-2020-0543
CVSS Score5.5 / 10
SeverityMEDIUM
WeaknessCWE-459
CISA KEVNo
Affected6 vendor(s)
PublishedJun 15, 2020
Related CVEs (CWE-459)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2020-0543 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.