CVE-2026-21366
Integer Overflow or Wraparound in Data Network Stack & Connectivity
Memory corruption while processing a packet with a size close to the maximum allowed value.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Integer Overflow or Wraparound in Data Network Stack & Connectivity
Memory corruption while processing a packet with a size close to the maximum allowed value.
- Record
CVE-2026-21366- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-190
- Updated
- 2026-11-02
EUVDEUVD-2026-52728
Memory corruption while processing a packet with a size close to the maximum allowed value.
- Record
EUVD-2026-52728- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-q2v3-gr28-5g2f
Memory corruption while processing a packet with a size close to the maximum allowed value.
Memory corruption while processing a packet with a size close to the maximum allowed value.
- Record
GHSA-q2v3-gr28-5g2f- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-190
- Updated
- 2026-11-02
NVD
Memory corruption while processing a packet with a size close to the maximum allowed value.
- Record
CVE-2026-21366- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-190
- Updated
- 2026-11-02
Affected products
- qualcomm lemans au lgit firmware
- qualcomm lemansau firmware
- qualcomm qam8255p firmware
- qualcomm qam8295p firmware
- qualcomm qam8620p firmware
- qualcomm qamsrv1h firmware
- qualcomm qamsrv1m firmware
- qualcomm qca6574au firmware
- qualcomm qca6595 firmware
- qualcomm qca6595au firmware
- qualcomm qca6688aq firmware
- qualcomm qca6696 firmware
Show 22 moreShow less
- qualcomm qca6698aq firmware
- qualcomm qca6797aq firmware
- qualcomm qca8695au firmware
- qualcomm sa6145p firmware
- qualcomm sa6150p firmware
- qualcomm sa6155p firmware
- qualcomm sa7255p firmware
- qualcomm sa7775p firmware
- qualcomm sa8145p firmware
- qualcomm sa8150p firmware
- qualcomm sa8155p firmware
- qualcomm sa8195p firmware
- qualcomm sa8255p firmware
- qualcomm sa8295p firmware
- qualcomm sa8540p firmware
- qualcomm sa8620p firmware
- qualcomm sa8770p firmware
- qualcomm sa9000p firmware
- qualcomm srv1h firmware
- qualcomm srv1l firmware
- qualcomm srv1m firmware
- qualcomm, inc. snapdragon
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-21366 is a high vulnerability (CVSS 7.8) in Qualcomm Lemans Au Lgit Firmware, published August 4, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.10%, the 0th percentile. No source names a fixed version.