CVE-2020-0543

CVE-2020-0543 is a medium-severity vulnerability in Intel Celeron 1000m with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-459.

Key facts

• Severity: Medium (CVSS 3.x base score 5.5)
• CVSS v2: 2.1
• EPSS exploit prediction: 1% (41st percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-459
• Affected product: Intel Celeron 1000m
• Published: 2020-06-15
• Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2020-0543?

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.

How severe is CVE-2020-0543?

CVE-2020-0543 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2020-0543 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-0543?

CVE-2020-0543 primarily affects Intel Celeron 1000m. In total, 702 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-0543?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-0543 published?

CVE-2020-0543 was published on 2020-06-15 and last updated on 2026-06-17.

References

• http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00025.html
• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00024.html
• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00031.html
• http://www.openwall.com/lists/oss-security/2020/07/14/5
• https://cert-portal.siemens.com/productcert/pdf/ssa-534763.pdf
• https://kc.mcafee.com/corporate/index?page=content&id=SB10318
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DT2VKDMQ3I37NBNJ256A2EXR7OJHXXKZ/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GRFC7UAPKAFFH5WX3AMDUBVHLKYQA2NZ/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NQZMOSHLTBBIECENNXA6M7DN5FEED4KI/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T5OUM24ZC43G4IDT3JUCIHJTSDXJSK6Y/
• https://usn.ubuntu.com/4385-1/
• https://usn.ubuntu.com/4387-1/
• https://usn.ubuntu.com/4388-1/
• https://usn.ubuntu.com/4389-1/
• https://usn.ubuntu.com/4390-1/
• https://usn.ubuntu.com/4391-1/
• https://usn.ubuntu.com/4392-1/
• https://usn.ubuntu.com/4393-1/
• https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00320.html

Affected products (702)

• cpe:2.3:h:intel:celeron_1000m:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_1005m:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_1007u:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_1017u:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_1019y:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_1020e:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_1020m:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_1037u:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_1047ue:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_2955u:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_2957u:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_2970m:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_2980u:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_2981u:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_3755u:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_3765u:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_3855u:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_3865u:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_3955u:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_3965u:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_3965y:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_5305u:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_725c:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_927ue:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_g1610:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_g1610t:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_g1620:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_g1620t:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_g1630:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_g1820:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_g1820t:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_g1830:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_g1840:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_g1840t:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_g1850:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_g3900:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_g3900t:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_g3900te:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_g3902e:-:*:*:*:*:*:*:*
• cpe:2.3:h:intel:celeron_g3920:-:*:*:*:*:*:*:*

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