What’s Vulnerable › Vulnerabilities

CVE-2019-25572: NordVPN 6.19.6 Denial of Service via Email Field Buffer Overflow

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-03-21 · updated 2026-10-07
• Weakness: CWE-1260

Description

NordVPN 6.19.6 contains a denial of service vulnerability that allows local attackers to crash the application by submitting an excessively long string in the email input field. Attackers can paste a buffer of 100,000 characters into the email field during login to trigger an application crash.

Affected products

• NordVPN: through 6.19.6

References

• https://downloads.nordcdn.com/apps/windows/10/NordVPN/latest/NordVPNSetup.exe
• https://nordvpn.com/
• https://www.exploit-db.com/exploits/46343
• https://www.vulncheck.com/advisories/nordvpn-denial-of-service-via-email-field-buffer-overflow

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