Auth bypass in Vpnbrowser Vpn Browser+
CVE-2018-25241
VPN Browser+ 1.1.0.0 contains a denial of service vulnerability that allows unauthenticated attackers to crash the application by submitting oversized input through the search functionality. Attackers can paste a large buffer of characters into the search bar to trigger an unhandled exception that terminates the application.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (27.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 27.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Vpnbrowser Vpn Browser+ — versions 1.1.0.0
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/46198 (exploit)
- www.microsoft.com/store/productId/9NFFFFS5Z2C7 (product)
- www.vulncheck.com/advisories/vpn-browser-denial-of-service (third-party-advisory)
Frequently asked questions
- What is CVE-2018-25241?
- CVE-2018-25241 is a high-severity vulnerability in Vpnbrowser Vpn Browser+, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2026-04-04.
- How severe is CVE-2018-25241?
- High severity. CVSS v3 base score is 7.5 out of 10.