What’s Vulnerable › Vulnerabilities

CVE-2026-21366: Integer Overflow or Wraparound in Data Network Stack & Connectivity

• 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: 2026-08-04 · updated 2026-10-23
• Weakness: CWE-190

Description

Memory corruption while processing a packet with a size close to the maximum allowed value.

Affected products

• Qualcomm Lemans Au Lgit Firmware: all versions
• Qualcomm Lemansau Firmware: all versions
• Qualcomm Qam8255P Firmware: all versions
• Qualcomm Qam8295P Firmware: all versions
• Qualcomm Qam8620P Firmware: all versions
• Qualcomm Qamsrv1H Firmware: all versions
• Qualcomm Qamsrv1M Firmware: all versions
• Qualcomm Qca6574Au Firmware: all versions
• Qualcomm Qca6595 Firmware: all versions
• Qualcomm Qca6595Au Firmware: all versions
• Qualcomm Qca6688Aq Firmware: all versions
• Qualcomm Qca6696 Firmware: all versions
• Qualcomm Qca6698Aq Firmware: all versions
• Qualcomm Qca6797Aq Firmware: all versions
• Qualcomm Qca8695Au Firmware: all versions
• Qualcomm Sa6145P Firmware: all versions
• Qualcomm Sa6150P Firmware: all versions
• Qualcomm Sa6155P Firmware: all versions
• Qualcomm Sa7255P Firmware: all versions
• Qualcomm Sa7775P Firmware: all versions
• Qualcomm Sa8145P Firmware: all versions
• Qualcomm Sa8150P Firmware: all versions
• Qualcomm Sa8155P Firmware: all versions
• Qualcomm Sa8195P Firmware: all versions
• Qualcomm Sa8255P Firmware: all versions
• Qualcomm Sa8295P Firmware: all versions
• Qualcomm Sa8540P Firmware: all versions
• Qualcomm Sa8620P Firmware: all versions
• Qualcomm Sa8770P Firmware: all versions
• Qualcomm Sa9000P Firmware: all versions

References

• https://docs.qualcomm.com/product/publicresources/securitybulletin/august-2026-bulletin.html

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