CVE-2020-26143 (GCVE-0-2020-26143)
Vulnerability from cvelistv5 – Published: 2021-05-11 19:36 – Updated: 2026-04-14 08:49
VLAI
EPSS
VEX
Summary
An issue was discovered in the ALFA Windows 10 driver 1030.36.604 for AWUS036ACH. The WEP, WPA, WPA2, and WPA3 implementations accept fragmented plaintext frames in a protected Wi-Fi network. An adversary can abuse this to inject arbitrary data frames independent of the network configuration.
Severity
6.5 (Medium)
CWE
- n/a
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://tools.cisco.com/security/center/content/C… | vendor-advisoryx_refsource_CISCO |
| https://www.fragattacks.com | x_refsource_MISC |
| https://github.com/vanhoefm/fragattacks/blob/mast… | x_refsource_MISC |
| http://www.openwall.com/lists/oss-security/2021/0… | mailing-listx_refsource_MLIST |
| https://cert-portal.siemens.com/productcert/pdf/s… | x_refsource_CONFIRM |
| https://www.arista.com/en/support/advisories-noti… | x_refsource_MISC |
| https://cert-portal.siemens.com/productcert/html/… | |
| https://cert-portal.siemens.com/productcert/html/… |
Impacted products
23 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Siemens | SCALANCE W721-1 RJ45 |
Affected:
0 , < V6.6.0
(custom)
|
guessed | |
| Siemens | SCALANCE W722-1 RJ45 |
Affected:
0 , < V6.6.0
(custom)
|
guessed | |
| Siemens | SCALANCE W734-1 RJ45 |
Affected:
0 , < V6.6.0
(custom)
|
guessed | |
| Siemens | SCALANCE W734-1 RJ45 (USA) |
Affected:
0 , < V6.6.0
(custom)
|
guessed | |
| Siemens | SCALANCE W738-1 M12 |
Affected:
0 , < V6.6.0
(custom)
|
guessed | |
| Siemens | SCALANCE W748-1 M12 |
Affected:
0 , < V6.6.0
(custom)
|
guessed | |
| Siemens | SCALANCE W748-1 RJ45 |
Affected:
0 , < V6.6.0
(custom)
|
guessed | |
| Siemens | SCALANCE W761-1 RJ45 |
Affected:
0 , < V6.6.0
(custom)
|
guessed | |
| Siemens | SCALANCE W774-1 M12 EEC |
Affected:
0 , < V6.6.0
(custom)
|
guessed | |
| Siemens | SCALANCE W774-1 RJ45 |
Affected:
0 , < V6.6.0
(custom)
|
guessed | |
| Siemens | SCALANCE W774-1 RJ45 (USA) |
Affected:
0 , < V6.6.0
(custom)
|
guessed | |
| Siemens | SCALANCE W778-1 M12 |
Affected:
0 , < V6.6.0
(custom)
|
guessed | |
| Siemens | SCALANCE W778-1 M12 EEC |
Affected:
0 , < V6.6.0
(custom)
|
guessed | |
| Siemens | SCALANCE W778-1 M12 EEC (USA) |
Affected:
0 , < V6.6.0
(custom)
|
guessed | |
| Siemens | SCALANCE W786-1 RJ45 |
Affected:
0 , < V6.6.0
(custom)
|
guessed | |
| Siemens | SCALANCE W786-2 RJ45 |
Affected:
0 , < V6.6.0
(custom)
|
guessed | |
| Siemens | SCALANCE W786-2 SFP |
Affected:
0 , < V6.6.0
(custom)
|
guessed | |
| Siemens | SCALANCE W786-2IA RJ45 |
Affected:
0 , < V6.6.0
(custom)
|
guessed | |
| Siemens | SCALANCE W788-1 M12 |
Affected:
0 , < V6.6.0
(custom)
|
guessed | |
| Siemens | SCALANCE W788-1 RJ45 |
Affected:
0 , < V6.6.0
(custom)
|
guessed | |
| Siemens | SCALANCE W788-2 M12 |
Affected:
0 , < V6.6.0
(custom)
|
guessed | |
| Siemens | SCALANCE W788-2 M12 EEC |
Affected:
0 , < V6.6.0
(custom)
|
guessed | |
| Siemens | SCALANCE W788-2 RJ45 |
Affected:
0 , < V6.6.0
(custom)
|
guessed |
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-04T15:49:07.234Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
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"references": [
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"name": "20210511 Multiple Vulnerabilities in Frame Aggregation and Fragmentation Implementations of 802.11 Specification Affecting Cisco Products: May 2021",
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"url": "https://www.arista.com/en/support/advisories-notices/security-advisories/12602-security-advisory-63"
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"title": "CVE Program Container"
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{
"affected": [
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},
{
"defaultStatus": "unknown",
"product": "SCALANCE W722-1 RJ45",
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"versions": [
{
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"status": "affected",
"version": "0",
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},
{
"defaultStatus": "unknown",
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"vendor": "Siemens",
"versions": [
{
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},
{
"defaultStatus": "unknown",
"product": "SCALANCE W722-1 RJ45",
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"versions": [
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"lessThan": "V6.6.0",
"status": "affected",
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},
{
"defaultStatus": "unknown",
"product": "SCALANCE W722-1 RJ45",
"vendor": "Siemens",
"versions": [
{
"lessThan": "V6.6.0",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SCALANCE W722-1 RJ45",
"vendor": "Siemens",
"versions": [
{
"lessThan": "V6.6.0",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SCALANCE W722-1 RJ45",
"vendor": "Siemens",
"versions": [
{
"lessThan": "V6.6.0",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SCALANCE W734-1 RJ45",
"vendor": "Siemens",
"versions": [
{
"lessThan": "V6.6.0",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SCALANCE W734-1 RJ45",
"vendor": "Siemens",
"versions": [
{
"lessThan": "V6.6.0",
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{
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{
"defaultStatus": "unknown",
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"vendor": "Siemens",
"versions": [
{
"lessThan": "V6.6.0",
"status": "affected",
"version": "0",
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]
},
{
"defaultStatus": "unknown",
"product": "SCALANCE W734-1 RJ45 (USA)",
"vendor": "Siemens",
"versions": [
{
"lessThan": "V6.6.0",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SCALANCE W734-1 RJ45 (USA)",
"vendor": "Siemens",
"versions": [
{
"lessThan": "V6.6.0",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SCALANCE W738-1 M12",
"vendor": "Siemens",
"versions": [
{
"lessThan": "V6.6.0",
"status": "affected",
"version": "0",
"versionType": "custom"
}
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},
{
"defaultStatus": "unknown",
"product": "SCALANCE W738-1 M12",
"vendor": "Siemens",
"versions": [
{
"lessThan": "V6.6.0",
"status": "affected",
"version": "0",
"versionType": "custom"
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{
"defaultStatus": "unknown",
"product": "SCALANCE W738-1 M12",
"vendor": "Siemens",
"versions": [
{
"lessThan": "V6.6.0",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SCALANCE W738-1 M12",
"vendor": "Siemens",
"versions": [
{
"lessThan": "V6.6.0",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SCALANCE W748-1 M12",
"vendor": "Siemens",
"versions": [
{
"lessThan": "V6.6.0",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SCALANCE W748-1 M12",
"vendor": "Siemens",
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{
"lessThan": "V6.6.0",
"status": "affected",
"version": "0",
"versionType": "custom"
}
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{
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"vendor": "Siemens",
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{
"lessThan": "V6.6.0",
"status": "affected",
"version": "0",
"versionType": "custom"
}
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},
{
"defaultStatus": "unknown",
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"vendor": "Siemens",
"versions": [
{
"lessThan": "V6.6.0",
"status": "affected",
"version": "0",
"versionType": "custom"
}
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},
{
"defaultStatus": "unknown",
"product": "SCALANCE W748-1 RJ45",
"vendor": "Siemens",
"versions": [
{
"lessThan": "V6.6.0",
"status": "affected",
"version": "0",
"versionType": "custom"
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{
"defaultStatus": "unknown",
"product": "SCALANCE W748-1 RJ45",
"vendor": "Siemens",
"versions": [
{
"lessThan": "V6.6.0",
"status": "affected",
"version": "0",
"versionType": "custom"
}
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},
{
"defaultStatus": "unknown",
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"vendor": "Siemens",
"versions": [
{
"lessThan": "V6.6.0",
"status": "affected",
"version": "0",
"versionType": "custom"
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},
{
"defaultStatus": "unknown",
"product": "SCALANCE W748-1 RJ45",
"vendor": "Siemens",
"versions": [
{
"lessThan": "V6.6.0",
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},
{
"defaultStatus": "unknown",
"product": "SCALANCE W761-1 RJ45",
"vendor": "Siemens",
"versions": [
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{
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"versions": [
{
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"version": "0",
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]
},
{
"defaultStatus": "unknown",
"product": "SCALANCE W774-1 M12 EEC",
"vendor": "Siemens",
"versions": [
{
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"status": "affected",
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}
]
},
{
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}
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},
{
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"product": "SCALANCE W774-1 M12 EEC",
"vendor": "Siemens",
"versions": [
{
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"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SCALANCE W774-1 M12 EEC",
"vendor": "Siemens",
"versions": [
{
"lessThan": "V6.6.0",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SCALANCE W774-1 RJ45",
"vendor": "Siemens",
"versions": [
{
"lessThan": "V6.6.0",
"status": "affected",
"version": "0",
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}
]
},
{
"defaultStatus": "unknown",
"product": "SCALANCE W774-1 RJ45",
"vendor": "Siemens",
"versions": [
{
"lessThan": "V6.6.0",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SCALANCE W774-1 RJ45",
"vendor": "Siemens",
"versions": [
{
"lessThan": "V6.6.0",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SCALANCE W774-1 RJ45",
"vendor": "Siemens",
"versions": [
{
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"status": "affected",
"version": "0",
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}
]
},
{
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"product": "SCALANCE W774-1 RJ45",
"vendor": "Siemens",
"versions": [
{
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}
]
},
{
"defaultStatus": "unknown",
"product": "SCALANCE W774-1 RJ45",
"vendor": "Siemens",
"versions": [
{
"lessThan": "V6.6.0",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SCALANCE W774-1 RJ45",
"vendor": "Siemens",
"versions": [
{
"lessThan": "V6.6.0",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SCALANCE W774-1 RJ45",
"vendor": "Siemens",
"versions": [
{
"lessThan": "V6.6.0",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SCALANCE W774-1 RJ45 (USA)",
"vendor": "Siemens",
"versions": [
{
"lessThan": "V6.6.0",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
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]
},
{
"defaultStatus": "unknown",
"product": "SCALANCE W778-1 M12",
"vendor": "Siemens",
"versions": [
{
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"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
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"vendor": "Siemens",
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{
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"product": "SCALANCE W778-1 M12",
"vendor": "Siemens",
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{
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"version": "0",
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}
]
},
{
"defaultStatus": "unknown",
"product": "SCALANCE W778-1 M12",
"vendor": "Siemens",
"versions": [
{
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"status": "affected",
"version": "0",
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}
]
},
{
"defaultStatus": "unknown",
"product": "SCALANCE W778-1 M12 EEC",
"vendor": "Siemens",
"versions": [
{
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"status": "affected",
"version": "0",
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}
]
},
{
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"product": "SCALANCE W778-1 M12 EEC",
"vendor": "Siemens",
"versions": [
{
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}
]
},
{
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"vendor": "Siemens",
"versions": [
{
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"status": "affected",
"version": "0",
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]
},
{
"defaultStatus": "unknown",
"product": "SCALANCE W778-1 M12 EEC (USA)",
"vendor": "Siemens",
"versions": [
{
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"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SCALANCE W786-1 RJ45",
"vendor": "Siemens",
"versions": [
{
"lessThan": "V6.6.0",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SCALANCE W786-1 RJ45",
"vendor": "Siemens",
"versions": [
{
"lessThan": "V6.6.0",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SCALANCE W786-1 RJ45",
"vendor": "Siemens",
"versions": [
{
"lessThan": "V6.6.0",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SCALANCE W786-1 RJ45",
"vendor": "Siemens",
"versions": [
{
"lessThan": "V6.6.0",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SCALANCE W786-2 RJ45",
"vendor": "Siemens",
"versions": [
{
"lessThan": "V6.6.0",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SCALANCE W786-2 RJ45",
"vendor": "Siemens",
"versions": [
{
"lessThan": "V6.6.0",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
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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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