What’s Vulnerable › Vulnerabilities

CVE-2025-21439: Out-of-bounds Read in Windows WLAN Host

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-04-07 · updated 2026-06-17
• Weakness: CWE-787

Description

Memory corruption may occur while reading board data via IOCTL call when the WLAN driver copies the content to the provided output buffer.

Affected products

• Qualcomm Fastconnect 6700 Firmware: all versions
• Qualcomm Fastconnect 6900 Firmware: all versions
• Qualcomm Qca6595Au Firmware: all versions
• Qualcomm Qcm5430 Firmware: all versions
• Qualcomm Qcm6490 Firmware: all versions
• Qualcomm Qcn7605 Firmware: all versions
• Qualcomm Qcn7606 Firmware: all versions
• Qualcomm Qcs5430 Firmware: all versions
• Qualcomm Qcs6490 Firmware: all versions
• Qualcomm Sc8180X+Sdx55 Firmware: all versions
• Qualcomm Snapdragon 8C Compute Platform (Sc8180X-Ad) Firmware: all versions
• Qualcomm Snapdragon 8C Compute Platform (Sc8180Xp-Ad) Firmware: all versions
• Qualcomm Snapdragon 8Cx Compute Platform (Sc8180X-Aa) Firmware: all versions
• Qualcomm Snapdragon 8Cx Compute Platform (Sc8180X-Ab) Firmware: all versions
• Qualcomm Snapdragon 8Cx Compute Platform (Sc8180Xp-Ac) Firmware: all versions
• Qualcomm Snapdragon 8Cx Compute Platform (Sc8180Xp-Af) Firmware: all versions
• Qualcomm Snapdragon 8Cx Gen 2 5G Compute Platform (Sc8180X-Ac) Firmware: all versions
• Qualcomm Snapdragon 8Cx Gen 2 5G Compute Platform (Sc8180X-Af) Firmware: all versions
• Qualcomm Snapdragon 8Cx Gen 2 5G Compute Platform (Sc8180Xp-Aa) Firmware: all versions
• Qualcomm Snapdragon 8Cx Gen 2 5G Compute Platform (Sc8180Xp-Ab) Firmware: all versions
• Qualcomm Video Collaboration Vc3 Platform Firmware: all versions
• Qualcomm Wcd9370 Firmware: all versions
• Qualcomm Wcd9375 Firmware: all versions
• Qualcomm Wcd9380 Firmware: all versions
• Qualcomm Wcd9385 Firmware: all versions

References

• https://docs.qualcomm.com/product/publicresources/securitybulletin/april-2025-bulletin.html

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