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ExpressVPN bug has been leaking some DNS requests for years

ID: def18c5f-ca12-5cd7-b2ad-ea0d0f962a4b

STIX ID: report--def18c5f-ca12-5cd7-b2ad-ea0d0f962a4b

Feed Name: Bleeping Computer

Threat Score
35/100

Date Published: 2024-02-11

Date Updated: 2026-04-20

Author: Bill Toulas

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ExpressVPN discovered a bug in Windows app versions 12.23.1–12.72.0 that, when split tunneling was active, caused some DNS requests to be sent to the system-configured DNS (usually the ISP) rather than ExpressVPN's DNS, potentially exposing visited domains; the vendor removed split tunneling in 12.73.0, recommends upgrading or disabling split tunneling, and will reintroduce the feature after a fix.

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