CVE-2026-25278

CVE-2026-25278 is a high-severity vulnerability in Qualcomm Lemans Au Lgit Firmware with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-367.

Key facts

• Severity: High (CVSS 3.x base score 7.8)
• EPSS exploit prediction: 0% (1st percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-367
• Affected product: Qualcomm Lemans Au Lgit Firmware
• Published: 2026-09-17
• Last modified: 2026-09-22

Description

Memory Corruption when processing I2C transfer requests due to a race condition between memory allocation and data copying.

Frequently asked questions

What is CVE-2026-25278?

Memory Corruption when processing I2C transfer requests due to a race condition between memory allocation and data copying.

How severe is CVE-2026-25278?

CVE-2026-25278 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-25278 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-25278?

CVE-2026-25278 primarily affects Qualcomm Lemans Au Lgit Firmware. In total, 29 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-25278?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2026-25278 published?

CVE-2026-25278 was published on 2026-09-17 and last updated on 2026-09-22.

References

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

Affected products (29)

• cpe:2.3:o:qualcomm:lemans_au_lgit_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:lemansau_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qam8255p_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qam8295p_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qam8620p_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qamsrv1h_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qamsrv1m_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca6574au_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca6595_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca6595au_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca6688aq_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca6696_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca6698aq_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca6797aq_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca8695au_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:sa6155p_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:sa7255p_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:sa7775p_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:sa8155p_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:sa8195p_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:sa8255p_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:sa8295p_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:sa8540p_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:sa8620p_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:sa8770p_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:sa9000p_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:srv1h_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:srv1l_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:srv1m_firmware:-:*:*:*:*:*:*:*

More vulnerabilities in Qualcomm Lemans Au Lgit Firmware

• CVE-2026-25289 — Critical (CVSS 9.6): Memory Corruption when processing Device Capability Extended attributes in certain NAN Service Discovery Frames with…
• CVE-2026-24088 — High (CVSS 8.2): Cryptographic Issue while processing a specific partition which allows unauthorized write access to load a customized…
• CVE-2026-21366 — High (CVSS 7.8): Memory corruption while processing a packet with a size close to the maximum allowed value.
• CVE-2025-59606 — High (CVSS 7.8): Memory Corruption when writing to invalid memory locations occurs due to heap memory exhaustion during secure data…
• CVE-2025-59604 — High (CVSS 7.8): Memory Corruption when running a memory copy operation due to invalid writes caused by a null pointer.
• CVE-2026-24082 — High (CVSS 7.8): Memory Corruption when copying data from a freed source while executing performance counter deselect operation.

All CVEs affecting Qualcomm Lemans Au Lgit Firmware →

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