How severe is CVE-2025-2704?

CVE-2025-2704 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 none, integrity none, and availability high.

Is CVE-2025-2704 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-2704?

CVE-2025-2704 affects Openvpn. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-2704?

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-2025-2704 have an EU (EUVD) identifier?

Yes. CVE-2025-2704 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-9571.

When was CVE-2025-2704 published?

CVE-2025-2704 was published on 2025-04-02 and last updated on 2026-06-17.

CVE-2025-2704

CVE-2025-2704 is a high-severity vulnerability in Openvpn 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-754.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-9571
Weakness: CWE-754
Affected product: Openvpn
Published: 2025-04-02
Last modified: 2026-06-17

Description

OpenVPN version 2.6.1 through 2.6.13 in server mode using TLS-crypt-v2 allows remote attackers to trigger a denial of service by corrupting and replaying network packets in the early handshake phase

Frequently asked questions

What is CVE-2025-2704?: OpenVPN version 2.6.1 through 2.6.13 in server mode using TLS-crypt-v2 allows remote attackers to trigger a denial of service by corrupting and replaying network packets in the early handshake phase
How severe is CVE-2025-2704?: CVE-2025-2704 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 none, integrity none, and availability high.
Is CVE-2025-2704 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-2704?: CVE-2025-2704 affects Openvpn. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-2704?: 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-2025-2704 have an EU (EUVD) identifier?: Yes. CVE-2025-2704 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-9571.
When was CVE-2025-2704 published?: CVE-2025-2704 was published on 2025-04-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:openvpn:openvpn:*:*:*:*:community:*:*:*

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