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Vulnerabilities CVE-2026-71940

CVE-2026-71940

High
Open
TLP:CLEAR

DrayTek VigorSwitch Multiple Models Buffer Overflow via acl_general_setup Edit ACE

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Description

Multiple DrayTek VigorSwitch models contain a buffer overflow vulnerability in the acl_general_setup Edit ACE function. The vulnerability is caused by copying the name field into a fixed-size buffer without length validation. A remote attacker can trigger this vulnerability via crafted input, causing a denial of service or potentially executing arbitrary commands. Exploitation requires valid administrative credentials for the device's web management interface.

Details

CVSS Score
8.6
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Confidence
90%
Published
Aug 24, 2026
Last Modified
Aug 24, 2026
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