Systems with microprocessors utilizing speculative execution and Intel software guard extensions (Intel SGX) may allow unauthorized disclosu
Systems with microprocessors utilizing speculative execution and Intel software guard extensions (Intel SGX) may allow unauthorized disclosure of information residing in the L1 data cache from an enclave to an attacker with local user access via a side-channel analysis.
- Published
- Aug 14, 2018
- Updated
- Jun 16, 2026
- EPSS
- 6.3% · 93th percentile
- CWE
- CWE-203
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Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 29 / 40 · 7.3 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 2 / 30 · 6.3%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| intel | core i3 | cpe:2.3:h:intel:core_i3 |
| intel | core i5 | cpe:2.3:h:intel:core_i5 |
| intel | core i7 | cpe:2.3:h:intel:core_i7 |
| intel | xeon e3 | cpe:2.3:h:intel:xeon_e3 |
| intel | xeon e3 1220 v5 | cpe:2.3:h:intel:xeon_e3_1220_v5 |
| intel | xeon e3 1225 v5 | cpe:2.3:h:intel:xeon_e3_1225_v5 |
| intel | xeon e3 1230 v5 | cpe:2.3:h:intel:xeon_e3_1230_v5 |
| intel | xeon e3 1235l v5 | cpe:2.3:h:intel:xeon_e3_1235l_v5 |
| intel | xeon e3 1240 v5 | cpe:2.3:h:intel:xeon_e3_1240_v5 |
| intel | xeon e3 1240l v5 | cpe:2.3:h:intel:xeon_e3_1240l_v5 |
| intel | xeon e3 1245 v5 | cpe:2.3:h:intel:xeon_e3_1245_v5 |
| intel | xeon e3 1260l v5 | cpe:2.3:h:intel:xeon_e3_1260l_v5 |
and 18 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- intel core i36006u
- intel core i36098p
- intel core i36100
- intel core i36100e
- intel core i36100h
- intel core i36100t
- intel core i36100te
- intel core i36100u
- intel core i36102e
- intel core i36157u
- intel core i36167u
- intel core i36300
- intel core i36300t
- intel core i36320
- intel core i38100
- intel core i38350k
- intel core i56200u
- intel core i56260u
- intel core i56267u
- intel core i56287u
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.
Intel Corporation Multiple
- Multipleaffected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | intel-microcode | before 3.20180703.1 | 3.20180703.1 |
| openSUSE:Tumbleweed | spectre-meltdown-checker | before 26.36.0602723-1.1 | 26.36.0602723-1.1 |
Same product
intel: all recordsOther highest-scoring records for the same primary product.
- CVE-2018-12169Platform sample code firmware in 4th Generation Intel Core Processor, 5th Generation Intel Core Processor, 6th Generation Intel Core Process30Monitor
- CVE-2017-5704Platform sample code firmware included with 4th Gen Intel Core Processor, 5th Gen Intel Core Processor, 6th Gen Intel Core Processor, and 7t26Monitor
- CVE-2018-3646Systems with microprocessors utilizing speculative execution and address translations may allow unauthorized disclosure of information resid25Monitor
- CVE-2018-3620Systems with microprocessors utilizing speculative execution and address translations may allow unauthorized disclosure of information resid24Monitor
- CVE-2018-3665System software utilizing Lazy FP state restore technique on systems using Intel Core-based microprocessors may potentially allow a local pr22Monitor
- CVE-2020-24491Debug message containing addresses of memory transactions in some Intel(R) 10th Generation Core Processors supporting SGX may allow a privil17Monitor
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 |
|---|---|---|
| debian:intel-microcode | 3.20180703.1 · Debian:12 | Package registry (OSV) |
| opensuse:spectre-meltdown-checker | 26.36.0602723-1.1 · openSUSE:Tumbleweed | Package registry (OSV) |
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.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
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.
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
- low · data or configuration can be modified
- Availability
- none
Impact can extend beyond the vulnerable component (scope changes).
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Changed
- Confidentiality impact
- High
- Integrity impact
- Low
- Availability impact
- None
Weakness class (CWE)
CWE-203 · Observable DiscrepancyCVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
nvd-secondary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- support.lenovo.com/us/en/solutions/LEN-24163
- www.huawei.com/en/psirt/security-advisories/huawei-sa-20180815-01-cpu-en
- www.securityfocus.com/bid/105080
- www.securitytracker.com/id/1041451
- cert-portal.siemens.com/productcert/pdf/ssa-254686.pdf
- cert-portal.siemens.com/productcert/pdf/ssa-608355.pdf
- foreshadowattack.eu/
- lists.debian.org/debian-lts-announce/2018/09/msg00017.html
- psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0008
- security.netapp.com/advisory/ntap-20180815-0001/
- software.intel.com/security-software-guidance/software-guidance/l1-terminal-fault
- support.f5.com/csp/article/K35558453
- support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03874en_us
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180814-cpusidechannel
- www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00161.html
- www.kb.cert.org/vuls/id/982149
- www.synology.com/support/security/Synology_SA_18_45
Vendor advisories and official records. Exploit/PoC links are deliberately left out.