Vulnerability details
CVE-2026-21371
Qualcomm Snapdragon
Buffer Over-read in WinBlast Driver
CVSS 3.1
7.8High
Official description
Memory Corruption when retrieving output buffer with insufficient size validation.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.8High | 3.1 | CVEProject cvelistV5 (CNA) (qualcomm) | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Qualcomm, Inc. | Snapdragon | AQT1000 | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | Cologne | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | FastConnect 6200 | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | FastConnect 6700 | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | FastConnect 6800 | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | FastConnect 6900 | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | FastConnect 7800 | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | QCA0000 | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | QCA6391 | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | QCA6420 | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | QCA6430 | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | QCM5430 | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | QCM6490 | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | Qualcomm Video Collaboration VC3 Platform | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | SC8380XP | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | SM6250 | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | Snapdragon 460 Mobile Platform | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | Snapdragon 662 Mobile Platform | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | Snapdragon 7c Compute Platform | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | Snapdragon 7c Gen 2 Compute Platform "Rennell Pro" | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | Snapdragon 7c+ Gen 3 Compute | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | Snapdragon 8c Compute Platform "Poipu Lite" | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | Snapdragon 8c Compute Platform (SC8180XP-AD) "Poipu Lite" | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | Snapdragon 8cx Compute Platform | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | Snapdragon 8cx Compute Platform "Poipu Pro" | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | Snapdragon 8cx Gen 2 5G Compute Platform | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | Snapdragon 8cx Gen 2 5G Compute Platform "Poipu Pro" | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | Snapdragon 8cx Gen 3 Compute Platform | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | WCD9340 | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | WCD9341 | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | WCD9370 | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | WCD9375 | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | WCD9378C | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | WCD9380 | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | WCD9385 | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | WCN3950 | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | WCN3988 | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | WSA8810 | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | WSA8815 | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | WSA8830 | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | WSA8835 | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | WSA8840 | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | WSA8845 | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | WSA8845H | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | X2000077 | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | X2000086 | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | X2000090 | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | X2000092 | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | X2000094 | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | XG101002 | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | XG101032 | CVEProject cvelistV5 (CNA) |
| Qualcomm, Inc. | Snapdragon | XG101039 | CVEProject cvelistV5 (CNA) |
References and advisories
1
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Details
- Published
- 2026-04-06
- Last updated
- 2026-04-07
- State
- Published
- Assigner (CNA)
- qualcomm
Exploit prediction (EPSS)
0.1%
Probability of exploitation in 30 days
0.8%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-126Buffer Over-read