CVE-2024-25728

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-02-11 · updated 2026-06-17
Weakness: CWE-922

Description

ExpressVPN before 12.73.0 on Windows, when split tunneling is used, sends DNS requests according to the Windows configuration (e.g., sends them to DNS servers operated by the user's ISP instead of to the ExpressVPN DNS servers), which may allow remote attackers to obtain sensitive information about websites visited by VPN users.

Affected products

Expressvpn: from 12.23.1 before 12.73.0 — fixed in 12.73.0

How to fix

Upgrade to a fixed version: Expressvpn 12.73.0. Check the vendor advisory for mitigations.

References

https://www.bleepingcomputer.com/news/security/expressvpn-bug-has-been-leaking-some-dns-requests-for-years/
https://www.expressvpn.com/blog/windows-app-dns-requests/
https://www.bleepingcomputer.com/news/security/expressvpn-bug-has-been-leaking-some-dns-requests-for-years/
https://www.expressvpn.com/blog/windows-app-dns-requests/

Get alerted when CVE-2024-25728 or the next vulnerability affects your stack