CVE-2026-21381 (GCVE-0-2026-21381)
Vulnerability from cvelistv5 – Published: 2026-04-06 15:33 – Updated: 2026-04-06 16:22
VLAI
EPSS
VEX
Title
Buffer Over-read in WLAN Firmware
Summary
Transient DOS when receiving a service data frame with excessive length during device matching over a neighborhood awareness network protocol connection.
Severity
7.6 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-06 16:12 UTC
CWE
- CWE-126 - Buffer Over-read
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Qualcomm, Inc. | Snapdragon |
Affected:
AR8035
Affected: Cologne Affected: FastConnect 6200 Affected: FastConnect 6700 Affected: FastConnect 6900 Affected: FastConnect 7800 Affected: FWA Gen 3 Ultra Platform Affected: G2 Gen 1 Affected: Milos Affected: Netrani Affected: Orne Affected: Palawan25 Affected: Pandeiro Affected: QCA6391 Affected: QCA6698AU Affected: QCA6777AQ Affected: QCA6787AQ Affected: QCA6797AQ Affected: QCA8081 Affected: QCA8337 Affected: QCC2073 Affected: QCC2076 Affected: QCC710 Affected: QCN6224 Affected: QCN6274 Affected: QCN9011 Affected: QCN9012 Affected: QCS8550 Affected: QFW7114 Affected: QFW7124 Affected: QLN1083BD Affected: QLN1086BD Affected: QMP1000 Affected: QPA1083BD Affected: QPA1086BD Affected: QXM1083 Affected: QXM1086 Affected: QXM1093 Affected: QXM1094 Affected: QXM1095 Affected: QXM1096 Affected: SAR1165P Affected: SAR2130P Affected: SC8380XP Affected: SM6650P Affected: SM7435 Affected: SM7635P Affected: SM7675 Affected: SM7675P Affected: SM8635 Affected: SM8635P Affected: SM8650Q Affected: SM8750P Affected: Snapdragon 6 Gen 1 Mobile Platform Affected: Snapdragon 6 Gen 3 Mobile Platform Affected: Snapdragon 6 Gen 4 Mobile Platform Affected: Snapdragon 7s Gen 3 Mobile Platform Affected: Snapdragon 8 Elite Affected: Snapdragon 8 Elite Gen 5 Affected: Snapdragon 8 Gen 3 Mobile Platform Affected: Snapdragon AR1 Gen 1 Platform Affected: Snapdragon AR1+ Gen 1 Platform Affected: Snapdragon X72 5G Modem-RF System Affected: Snapdragon X75 5G Modem-RF System Affected: SXR2230P Affected: SXR2250P Affected: SXR2330P Affected: SXR2350P Affected: WCD9340 Affected: WCD9370 Affected: WCD9375 Affected: WCD9378 Affected: WCD9378C Affected: WCD9380 Affected: WCD9385 Affected: WCD9390 Affected: WCD9395 Affected: WCN3988 Affected: WCN6450 Affected: WCN6650 Affected: WCN6755 Affected: WCN7860 Affected: WCN7861 Affected: WCN7880 Affected: WCN7881 Affected: WSA8810 Affected: WSA8815 Affected: WSA8830 Affected: WSA8832 Affected: WSA8835 Affected: WSA8840 Affected: WSA8845 Affected: WSA8845H Affected: X2000077 Affected: X2000086 Affected: X2000090 Affected: X2000092 Affected: X2000094 Affected: XG101002 Affected: XG101032 Affected: XG101039 Affected: XRV7209 Affected: XRV9209 |
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"version": "WSA8832"
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"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-126",
"description": "CWE-126 Buffer Over-read",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-04-06T15:33:55.889Z",
"orgId": "2cfc7d3e-20d3-47ac-8db7-1b7285aff15f",
"shortName": "qualcomm"
},
"references": [
{
"url": "https://docs.qualcomm.com/product/publicresources/securitybulletin/april-2026-bulletin.html"
}
],
"title": "Buffer Over-read in WLAN Firmware"
}
},
"cveMetadata": {
"assignerOrgId": "2cfc7d3e-20d3-47ac-8db7-1b7285aff15f",
"assignerShortName": "qualcomm",
"cveId": "CVE-2026-21381",
"datePublished": "2026-04-06T15:33:55.889Z",
"dateReserved": "2025-12-17T04:35:45.743Z",
"dateUpdated": "2026-04-06T16:22:14.443Z",
"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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