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Vulnerability record · CVE-2026-21366 · published 4 August 2026

CVE-2026-21366: Qualcomm lemans au lgit firmware integer overflow vulnerability

Qualcomm · Lemans Au Lgit Firmware

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

7.8 CVSS 3.1 High EPSS 0.10% · top 99.1% CWE-190 · Integer overflow
7.8CVSS 3.1 base score
0.10%EPSS exploitation probability, 30 days
NoNot in CISA KEV
33Affected product versions listed by NVD
1References
6 Aug 2026Last modified by NVD

Description

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

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

33 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://docs.qualcomm.com/product/publicresources/securitybulletin/august-2026-bulletin.html Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.8CVE-2026-21385Qualcomm chipset firmware memory corruption via alignment integer overflowA memory corruption flaw in Qualcomm chipset firmware arises from an integer overflow when alignments are used for memory allocation (CWE-190). It af…KEVEPSS 1.2%analysed7.8CVE-2024-43047Qualcomm chipset firmware use-after-free in HLOS memory map handlingA use-after-free (CWE-416) in Qualcomm chipset firmware occurs while maintaining memory maps of HLOS memory, leading to memory corruption. It affects…KEVEPSS 0.67%analysed7.8CVE-2023-33106Qualcomm GPU AUX Command Sync Point Memory CorruptionCVE-2023-33106 is a memory corruption flaw in Qualcomm chipsets triggered when a large list of sync points is submitted in an AUX command to the IOCT…KEVEPSS 0.92%analysed7.8CVE-2023-33107Qualcomm Graphics Linux integer overflow memory corruptionCVE-2023-33107 is an integer overflow (CWE-190) in Qualcomm Graphics Linux that causes memory corruption when a shared virtual memory region is assig…KEVEPSS 0.89%analysed7.8CVE-2023-33063Qualcomm DSP Services use-after-free memory corruptionCVE-2023-33063 is a use-after-free memory corruption flaw in Qualcomm DSP Services, triggered during a remote call from the high-level operating syst…KEVEPSS 0.69%analysed9.8CVE-2025-21483Qualcomm apq8017 firmware memory buffer overflow vulnerabilityMemory corruption when the UE receives an RTP packet from the network, during the reassembly of NALUs.EPSS 0.40%9.8CVE-2024-49839Qualcomm ar8035 firmware out-of-bounds read vulnerabilityMemory corruption during management frame processing due to mismatch in T2LM info element.EPSS 0.30%9.8CVE-2024-45569Qualcomm ar8035 firmware vulnerabilityMemory corruption while parsing the ML IE due to invalid frame content.EPSS 0.58%

Source: NIST National Vulnerability Database (record CVE-2026-21366), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.