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CVE-2026-80935

8.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: bound the device EEPROM address before the EFUSE copy mt7996_mcu_get_eeprom() derives the destination of th…

Published Sep 11, 2026EPSS 0.26%

Overview

CVE-2026-80935 is a high-severity vulnerability. It was published on September 11, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

wifi: mt76: mt7996: bound the device EEPROM address before the EFUSE copy

mt7996_mcu_get_eeprom() derives the destination of the EFUSE/EXT block

copy from the address reported by the MCU response (event->addr, a

device-controlled __le32) and clamps only the copy length, never the

destination offset into dev->mt76.eeprom.data. A malicious or

malfunctioning device can report an arbitrary address and drive an

out-of-bounds write of up to MT7996_EXT_EEPROM_BLOCK_SIZE bytes past

eeprom.data.

Reject a response whose address would place the copy outside eeprom.data

before deriving the destination pointer. Devices that echo the requested

in-bounds offset are unaffected.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/13b3c29a782033ce4a230be9e5618032813dbcd4Refgit.kernel.org/stable/c/388f471ca4758f644394b681ce97677a4d0e772cRefgit.kernel.org/stable/c/4892be1ef0bbe6db6b13bf46cb79b6706bb5b214Refgit.kernel.org/stable/c/6be59da2063d5b3522bfde8aae0487ec095eb384Refgit.kernel.org/stable/c/9e5abb5e2ade0b6fd0e47209711115d47a255176

How CyberStrike helps

Frequently asked questions

What is CVE-2026-80935?

CVE-2026-80935 is a high-severity vulnerability. It was published on September 11, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-80935?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-80935?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-80935?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-80935 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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