CVE-2021-42554 (GCVE-0-2021-42554)
Vulnerability from cvelistv5 – Published: 2022-02-03 01:40 – Updated: 2026-08-11 12:22
VLAI
EPSS
VEX
Summary
An issue was discovered in Insyde InsydeH2O with Kernel 5.0 before 05.08.42, Kernel 5.1 before 05.16.42, Kernel 5.2 before 05.26.42, Kernel 5.3 before 05.35.42, Kernel 5.4 before 05.42.51, and Kernel 5.5 before 05.50.51. An SMM memory corruption vulnerability in FvbServicesRuntimeDxe allows a possible attacker to write fixed or predictable data to SMRAM. Exploiting this issue could lead to escalating privileges to SMM.
Severity
8.2 (High)
CWE
- n/a
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://www.insyde.com/security-pledge | x_refsource_MISC |
| https://www.insyde.com/security-pledge/SA-2022012 | x_refsource_MISC |
| https://security.netapp.com/advisory/ntap-2022021… | x_refsource_CONFIRM |
| https://cert-portal.siemens.com/productcert/pdf/s… | x_refsource_CONFIRM |
| https://www.kb.cert.org/vuls/id/796611 | |
| https://cert-portal.siemens.com/productcert/html/… |
Impacted products
18 products
| Vendor | Product | Version | |
|---|---|---|---|
| Siemens | RUGGEDCOM APE1808 - BIOS |
Affected:
0 , < V1.0.202N
(custom)
|
|
| Siemens | SIMATIC Field PG M5 |
Affected:
0 , < V22.01.10
(custom)
|
|
| Siemens | SIMATIC Field PG M6 |
Affected:
0 , < V26.01.13
(custom)
|
|
| Siemens | SIMATIC IPC127E |
Affected:
0 , < V27.01.09
(custom)
|
|
| Siemens | SIMATIC IPC227G |
Affected:
0 , < V28.01.04
(custom)
|
|
| Siemens | SIMATIC IPC277G |
Affected:
0 , < V28.01.04
(custom)
|
|
| Siemens | SIMATIC IPC277G PRO |
Affected:
0 , < V28.01.04
(custom)
|
|
| Siemens | SIMATIC IPC327G |
Affected:
0 , < V28.01.04
(custom)
|
|
| Siemens | SIMATIC IPC377G |
Affected:
0 , < V28.01.04
(custom)
|
|
| Siemens | SIMATIC IPC427E |
Affected:
0 , < V21.01.17
(custom)
|
|
| Siemens | SIMATIC IPC477E |
Affected:
0 , < V21.01.17
(custom)
|
|
| Siemens | SIMATIC IPC477E PRO |
Affected:
0 , < V21.01.17
(custom)
|
|
| Siemens | SIMATIC IPC627E |
Affected:
0 , < V25.02.12
(custom)
|
|
| Siemens | SIMATIC IPC647E |
Affected:
0 , < V25.02.12
(custom)
|
|
| Siemens | SIMATIC IPC677E |
Affected:
0 , < V25.02.12
(custom)
|
|
| Siemens | SIMATIC IPC847E |
Affected:
0 , < V25.02.12
(custom)
|
|
| Siemens | SIMATIC ITP1000 |
Affected:
0 , < V23.01.10
(custom)
|
|
| Siemens | SIPLUS IPC427E |
Affected:
0 , < V21.01.17
(custom)
|
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"id": "CVE-2021-42554",
"lastModified": "2024-11-21T06:27:47.840",
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"redhat_vex": {
"current_release_date": "2025-05-29T05:06:29+00:00",
"cve": "CVE-2021-42554",
"id": "CVE-2021-42554",
"initial_release_date": "2021-01-01T00:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "CVE-2021-42554",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-42554.json",
"version": "3"
}
}
}
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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.
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.
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