How severe is CVE-2018-25368?

CVE-2018-25368 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-2018-25368 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2018-25368?

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-2018-25368 have an EU (EUVD) identifier?

Yes. CVE-2018-25368 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2018-21891.

When was CVE-2018-25368 published?

CVE-2018-25368 was published on 2026-05-25 and last updated on 2026-06-17.

CVE-2018-25368

CVE-2018-25368 is a high-severity vulnerability 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-789.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 8.7
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2018-21891
Weakness: CWE-789
Published: 2026-05-25
Last modified: 2026-06-17

Description

Nord VPN 6.14.31 contains a denial of service vulnerability that allows unauthenticated attackers to crash the application by submitting an excessively long string in the password field. Attackers can paste a buffer of repeated characters into the password input field to trigger an application crash when attempting to authenticate.

Frequently asked questions

What is CVE-2018-25368?: Nord VPN 6.14.31 contains a denial of service vulnerability that allows unauthenticated attackers to crash the application by submitting an excessively long string in the password field. Attackers can paste a buffer of repeated characters into the password input field to trigger an application crash when attempting to authenticate.
How severe is CVE-2018-25368?: CVE-2018-25368 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-2018-25368 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2018-25368?: 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-2018-25368 have an EU (EUVD) identifier?: Yes. CVE-2018-25368 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2018-21891.
When was CVE-2018-25368 published?: CVE-2018-25368 was published on 2026-05-25 and last updated on 2026-06-17.

References

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