CVE-2020-0543: Incomplete cleanup from specific special register read operations in some Intel(R) Processors may allow an authenticated user to potentially
Noroxi assessment
Priority: Monitor (action score 22/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 0.54% (FIRST EPSS).
- Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
- Fixed version: xen (Alpine:v3.10) 4.12.3-r1; xen (Alpine:v3.11) 4.13.1-r1; xen (Alpine:v3.13) 4.13.1-r3.
- Mentioned 6 times in Turkish national cyber security advisories (siberguvenlik.gov.tr).
Low priority for now. Upgrade to xen (Alpine:v3.10) 4.12.3-r1; xen (Alpine:v3.11) 4.13.1-r1; xen (Alpine:v3.13) 4.13.1-r3 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
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.
- BDU:2020-04459
- DLA-2241-1
- DLA-2242-1
- DLA-2248-1
- DSA-4698-1
- DSA-4699-1
- DSA-4701-1
- openSUSE-SU-2020:0791-1
- openSUSE-SU-2020:0801-1
- openSUSE-SU-2020:0818-1
- openSUSE-SU-2020:0965-1
- openSUSE-SU-2020:0985-1
- openSUSE-SU-2021:0242-1
- openSUSE-SU-2024:11369-1
- openSUSE-SU-2024:11370-1
- openSUSE-SU-2024:11371-1
- openSUSE-SU-2024:11478-1
- openSUSE-SU-2026:11242-1
- RHSA-2020:2431
- RHSA-2020:2432
- Published
- Jun 15, 2020
- Updated
- Jun 16, 2026
- EPSS
- 0.5% · 45th percentile
- CWE
- CWE-459
Report tools
Action score
22
Monitor
Low priority for now.
- CVSS
- 22 / 40 · 5.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.5%
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| intel | celeron 1000m | cpe:2.3:h:intel:celeron_1000m |
| intel | celeron 1005m | cpe:2.3:h:intel:celeron_1005m |
| intel | celeron 1007u | cpe:2.3:h:intel:celeron_1007u |
| intel | celeron 1017u | cpe:2.3:h:intel:celeron_1017u |
| intel | celeron 1019y | cpe:2.3:h:intel:celeron_1019y |
| intel | celeron 1020e | cpe:2.3:h:intel:celeron_1020e |
| intel | celeron 1020m | cpe:2.3:h:intel:celeron_1020m |
| intel | celeron 1037u | cpe:2.3:h:intel:celeron_1037u |
| intel | celeron 1047ue | cpe:2.3:h:intel:celeron_1047ue |
| intel | celeron 2955u | cpe:2.3:h:intel:celeron_2955u |
| intel | celeron 2957u | cpe:2.3:h:intel:celeron_2957u |
| intel | celeron 2970m | cpe:2.3:h:intel:celeron_2970m |
and 188 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- intel celeron 1000mall versions
- intel celeron 1005mall versions
- intel celeron 1007uall versions
- intel celeron 1017uall versions
- intel celeron 1019yall versions
- intel celeron 1020eall versions
- intel celeron 1020mall versions
- intel celeron 1037uall versions
- intel celeron 1047ueall versions
- intel celeron 2955uall versions
- intel celeron 2957uall versions
- intel celeron 2970mall versions
- intel celeron 2980uall versions
- intel celeron 2981uall versions
- intel celeron 3755uall versions
- intel celeron 3765uall versions
- intel celeron 3855uall versions
- intel celeron 3865uall versions
- intel celeron 3955uall versions
- intel celeron 3965uall versions
Versions reported by the vendor
Affected version ranges reported by the assigning authority (intel). Independent of NVD's CPE analysis and usually ahead of it.
n/a Intel(R) Processors
- See provided referenceaffected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Alpine:v3.10 | xen | before 4.12.3-r1 | 4.12.3-r1 |
| Alpine:v3.11 | xen | before 4.13.1-r1 | 4.13.1-r1 |
| Alpine:v3.13 | xen | before 4.13.1-r3 | 4.13.1-r3 |
| Alpine:v3.9 | xen | before 4.11.4-r0 | 4.11.4-r0 |
| Debian:10 | intel-microcode | before 3.20200609.2~deb10u1 | 3.20200609.2~deb10u1 |
| Debian:10 | linux | before 4.19.118-2+deb10u1 | 4.19.118-2+deb10u1 |
| Debian:12 | intel-microcode | before 3.20200609.1 | 3.20200609.1 |
| Debian:12 | linux | before 5.6.14-2 | 5.6.14-2 |
| Debian:8 | intel-microcode | before 3.20200609.2~deb8u1 | 3.20200609.2~deb8u1 |
| Debian:8 | linux | before 3.16.84-1 | 3.16.84-1 |
| Debian:8 | linux-4.9 | before 4.9.210-1+deb9u1~deb8u1 | 4.9.210-1+deb9u1~deb8u1 |
| Debian:9 | intel-microcode | before 3.20200609.2~deb9u1 | 3.20200609.2~deb9u1 |
| Debian:9 | linux | before 4.9.210-1+deb9u1 | 4.9.210-1+deb9u1 |
| openSUSE:Leap 15.1 | kernel-debug | before 4.12.14-lp151.28.52.1 | 4.12.14-lp151.28.52.1 |
| openSUSE:Leap 15.1 | kernel-default | before 4.12.14-lp151.28.52.1 | 4.12.14-lp151.28.52.1 |
| openSUSE:Leap 15.1 | kernel-docs | before 4.12.14-lp151.28.52.2 | 4.12.14-lp151.28.52.2 |
| openSUSE:Leap 15.1 | kernel-kvmsmall | before 4.12.14-lp151.28.52.1 | 4.12.14-lp151.28.52.1 |
| openSUSE:Leap 15.1 | kernel-obs-build | before 4.12.14-lp151.28.52.3 | 4.12.14-lp151.28.52.3 |
| openSUSE:Leap 15.1 | kernel-obs-qa | before 4.12.14-lp151.28.52.3 | 4.12.14-lp151.28.52.3 |
| openSUSE:Leap 15.1 | kernel-source | before 4.12.14-lp151.28.52.1 | 4.12.14-lp151.28.52.1 |
| openSUSE:Leap 15.1 | kernel-syms | before 4.12.14-lp151.28.52.1 | 4.12.14-lp151.28.52.1 |
| openSUSE:Leap 15.1 | kernel-vanilla | before 4.12.14-lp151.28.52.1 | 4.12.14-lp151.28.52.1 |
| openSUSE:Leap 15.1 | ucode-intel | before 20200602-lp151.2.24.1 | 20200602-lp151.2.24.1 |
| openSUSE:Leap 15.1 | xen | before 4.12.3_02-lp151.2.18.2 | 4.12.3_02-lp151.2.18.2 |
+96
Same product
intel: all recordsOther highest-scoring records for the same primary product.
- CVE-2020-0550Improper data forwarding in some data cache for some Intel(R) Processors may allow an authenticated user to potentially enable information d22Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| alpine:xen | 4.12.3-r1 · Alpine:v3.10 | Package registry (OSV) |
| debian:intel-microcode | 3.20200609.1 · Debian:12 | Package registry (OSV) |
| debian:linux | 5.6.14-2 · Debian:12 | Package registry (OSV) |
| debian:linux-4.9 | 4.9.210-1+deb9u1~deb8u1 · Debian:8 | Package registry (OSV) |
| opensuse:kernel-debug | 4.12.14-lp151.28.52.1 · openSUSE:Leap 15.1 | Package registry (OSV) |
| opensuse:kernel-default | 4.12.14-lp151.28.52.1 · openSUSE:Leap 15.1 | Package registry (OSV) |
| opensuse:kernel-docs | 4.12.14-lp151.28.52.2 · openSUSE:Leap 15.1 | Package registry (OSV) |
| opensuse:kernel-kvmsmall | 4.12.14-lp151.28.52.1 · openSUSE:Leap 15.1 | Package registry (OSV) |
| opensuse:sca-patterns-base | 1.5.0-150300.10.3.1 · openSUSE:Leap 15.3 | Package registry (OSV) |
| opensuse:sca-patterns-hae | 1.5.1-150300.10.3.1 · openSUSE:Leap 15.3 | Package registry (OSV) |
| opensuse:sca-patterns-sle11 | 1.5.1-150300.18.3.1 · openSUSE:Leap 15.3 | Package registry (OSV) |
| opensuse:sca-patterns-sle12 | 1.5.1-150300.3.3.1 · openSUSE:Leap 15.3 | Package registry (OSV) |
| opensuse:sca-patterns-sle15 | 1.5.1-150300.14.3.1 · openSUSE:Leap 15.3 | Package registry (OSV) |
| opensuse:sca-patterns-suma | 1.5.0-150300.9.3.1 · openSUSE:Leap 15.3 | Package registry (OSV) |
| opensuse:sca-server-report | 1.5.1-150300.11.3.1 · openSUSE:Leap 15.3 | Package registry (OSV) |
| opensuse:ucode-intel | 20200602-lp151.2.24.1 · openSUSE:Leap 15.1 | Package registry (OSV) |
| red hat:microcode_ctl | 4:20191115-4.20200602.2.el8_2 · Red Hat:enterprise_linux:8::baseos | Package registry (OSV) |
| red hat:microcode_ctl-debuginfo | 2:2.1-61.6.el7_8 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| rocky linux:microcode_ctl | 4:20210216-1.20210608.1.el8_4 · Rocky Linux:8 | Package registry (OSV) |
| suse:kernel-bigmem | 3.0.101-108.114.1 · SUSE:Linux Enterprise Server 11 SP4-LTSS | Package registry (OSV) |
| suse:kernel-default | 3.0.101-108.114.1 · SUSE:Linux Enterprise Server 11 SP4-LTSS | Package registry (OSV) |
| suse:kernel-ec2 | 3.0.101-108.114.1 · SUSE:Linux Enterprise Server 11 SP4-LTSS | Package registry (OSV) |
| suse:kernel-pae | 3.0.101-108.114.1 · SUSE:Linux Enterprise Server 11 SP4-LTSS | Package registry (OSV) |
| suse:kernel-ppc64 | 3.0.101-108.114.1 · SUSE:Linux Enterprise Server 11 SP4-LTSS | Package registry (OSV) |
| suse:sca-patterns-base | 1.5.0-150300.10.3.1 · SUSE:Linux Enterprise Module for Server Applications 15 SP3 | Package registry (OSV) |
| suse:sca-patterns-hae | 1.5.1-150300.10.3.1 · SUSE:Linux Enterprise Module for Server Applications 15 SP3 | Package registry (OSV) |
| suse:sca-patterns-sle11 | 1.5.1-150300.18.3.1 · SUSE:Linux Enterprise Module for Server Applications 15 SP3 | Package registry (OSV) |
| suse:sca-patterns-sle12 | 1.5.1-150300.3.3.1 · SUSE:Linux Enterprise Module for Server Applications 15 SP3 | Package registry (OSV) |
| suse:sca-patterns-sle15 | 1.5.1-150300.14.3.1 · SUSE:Linux Enterprise Module for Server Applications 15 SP3 | Package registry (OSV) |
| suse:sca-patterns-suma | 1.5.0-150300.9.3.1 · SUSE:Linux Enterprise Module for Server Applications 15 SP3 | Package registry (OSV) |
+1
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
No history yet (it accumulates with the daily EPSS job).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.
National notice (Türkiye Cybersecurity Directorate / USOM)
Official security notices citing this record; remediation advice is on the agency's page.
- TR-21-0691 · Sep 1, 2021(RedHat Güvenlik Güncellemesi)
- TR-21-0661 · Aug 19, 2021(RedHat Güvenlik Güncellemesi Yayınladı)
- TR-21-0634 · Aug 12, 2021(RedHat Güvenlik Güncellemesi Yayınladı)
- TR-20-686 · Sep 9, 2020(Siemens Endüstriyel Ürünler Zafiyeti)
- TR-20-513 · Jul 13, 2020(Linux Kernel Güvenlik Güncellemesi)
- TR-20-417 · Jun 10, 2020(Linux Kernel Güvenlik Güncellemesi)
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- none
- Availability
- none
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- None
- Availability impact
- None
Weakness class (CWE)
CWE-459 · Incomplete CleanupCVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (18 more)Show less
- lists.opensuse.org/opensuse-security-announce/2020-07/msg00024.html
- lists.opensuse.org/opensuse-security-announce/2020-07/msg00031.html
- www.openwall.com/lists/oss-security/2020/07/14/5
- cert-portal.siemens.com/productcert/pdf/ssa-534763.pdf
- kc.mcafee.com/corporate/index?page=content&id=SB10318
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DT2VKDMQ3I37NBNJ256A2EXR7OJHXXKZ/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GRFC7UAPKAFFH5WX3AMDUBVHLKYQA2NZ/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NQZMOSHLTBBIECENNXA6M7DN5FEED4KI/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T5OUM24ZC43G4IDT3JUCIHJTSDXJSK6Y/
- usn.ubuntu.com/4385-1/
- usn.ubuntu.com/4387-1/
- usn.ubuntu.com/4388-1/
- usn.ubuntu.com/4389-1/
- usn.ubuntu.com/4390-1/
- usn.ubuntu.com/4391-1/
- usn.ubuntu.com/4392-1/
- usn.ubuntu.com/4393-1/
- www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00320.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.