CVE-2024-25728: expressvpn — Fix

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.

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Weakness Type (CWE)

CWE-922 CWE-922

Affected Products

Vendor	Product	Versions
expressvpn	expressvpn	12.23.1 — 12.73.0

References

Advisories & Patches

https://www.expressvpn.com/blog/windows-app-dns-requests/ https://www.expressvpn.com/blog/windows-app-dns-requests/

Other References

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

Frequently Asked Questions

What is CVE-2024-25728? +

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. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2024-25728? +

CVE-2024-25728 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-25728? +

CVE-2024-25728 affects products from expressvpn, specifically: expressvpn. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-25728? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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