CVE-2018-12126 (GCVE-0-2018-12126)
Vulnerability from cvelistv5 – Published: 2019-05-30 15:36 – Updated: 2026-05-29 20:09
VLAI
EPSS
VEX
Summary
Microarchitectural Store Buffer Data Sampling (MSBDS): Store buffers on some microprocessors utilizing speculative execution may allow an authenticated user to potentially enable information disclosure via a side channel with local access. A list of impacted products can be found here: https://www.intel.com/content/dam/www/public/us/en/documents/corporate-information/SA00233-microcode-update-guidance_05132019.pdf
Severity
5.6 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-29 20:09 UTC
CWE
- Information Disclosure
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
25 references
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Intel Corporation | Central ProcCVE-2018-12126essing Units (CPUs) |
Affected:
A list of impacted products can be found here: https://www.intel.com/content/dam/www/public/us/en/documents/corporate-information/SA00233-microcode-update-guidance_05132019.pdf
|
guessed |
Date Public
2019-05-14 00:00
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"url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-19:26.mcu.asc"
},
{
"name": "20191112 FreeBSD Security Advisory FreeBSD-SA-19:26.mcu",
"refsource": "BUGTRAQ",
"url": "https://seclists.org/bugtraq/2019/Nov/16"
},
{
"name": "20191112 [SECURITY] [DSA 4564-1] linux security update",
"refsource": "BUGTRAQ",
"url": "https://seclists.org/bugtraq/2019/Nov/15"
},
{
"name": "http://packetstormsecurity.com/files/155281/FreeBSD-Security-Advisory-FreeBSD-SA-19-26.mcu.html",
"refsource": "MISC",
"url": "http://packetstormsecurity.com/files/155281/FreeBSD-Security-Advisory-FreeBSD-SA-19-26.mcu.html"
},
{
"name": "DSA-4602",
"refsource": "DEBIAN",
"url": "https://www.debian.org/security/2020/dsa-4602"
},
{
"name": "20200114 [SECURITY] [DSA 4602-1] xen security update",
"refsource": "BUGTRAQ",
"url": "https://seclists.org/bugtraq/2020/Jan/21"
},
{
"name": "GLSA-202003-56",
"refsource": "GENTOO",
"url": "https://security.gentoo.org/glsa/202003-56"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "6dda929c-bb53-4a77-a76d-48e79601a1ce",
"assignerShortName": "intel",
"cveId": "CVE-2018-12126",
"datePublished": "2019-05-30T15:36:05.000Z",
"dateReserved": "2018-06-11T00:00:00.000Z",
"dateUpdated": "2026-05-29T20:09:50.287Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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