CVE-2024-25728
CVE-2024-25728 is a high-severity vulnerability in Expressvpn with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-922.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- EPSS exploit prediction: 1% (48th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2024-23038
- Weakness: CWE-922
- Affected product: Expressvpn
- Published:
- Last modified:
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.
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.
- How severe is CVE-2024-25728?
- CVE-2024-25728 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
- Is CVE-2024-25728 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2024-25728?
- CVE-2024-25728 affects Expressvpn. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2024-25728?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2024-25728 have an EU (EUVD) identifier?
- Yes. CVE-2024-25728 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-23038.
- When was CVE-2024-25728 published?
- CVE-2024-25728 was published on 2024-02-11 and last updated on 2026-06-17.
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/
Affected products (1)
- cpe:2.3:a:expressvpn:expressvpn:*:*:*:*:*:windows:*:*
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- CVE-2020-29238 — High (CVSS 7.5): An integer buffer overflow in the Nginx webserver of ExpressVPN Router version 1 allows remote attackers to obtain…
- CVE-2018-15490 — High (CVSS 7.1): An issue was discovered in ExpressVPN on Windows. The Xvpnd.exe process (which runs as a service with SYSTEM…
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