How severe is CVE-2020-25200?

CVE-2020-25200 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2020-25200 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-25200?

CVE-2020-25200 affects Pritunl. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-25200?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-25200 published?

CVE-2020-25200 was published on 2020-10-01 and last updated on 2026-06-17.

CVE-2020-25200

CVE-2020-25200 is a medium-severity vulnerability in Pritunl with a CVSS 3.x base score of 5.3. 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-203.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 7% (94th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-203
Affected product: Pritunl
Published: 2020-10-01
Last modified: 2026-06-17

Description

Pritunl 1.29.2145.25 allows attackers to enumerate valid VPN usernames via a series of /auth/session login attempts. Initially, the server will return error 401. However, if the username is valid, then after 20 login attempts, the server will start responding with error 400. Invalid usernames will receive error 401 indefinitely. Note: This has been disputed by the vendor as not a vulnerability. They argue that this is an intended design

Frequently asked questions

What is CVE-2020-25200?: Pritunl 1.29.2145.25 allows attackers to enumerate valid VPN usernames via a series of /auth/session login attempts. Initially, the server will return error 401. However, if the username is valid, then after 20 login attempts, the server will start responding with error 400. Invalid usernames will receive error 401 indefinitely. Note: This has been disputed by the vendor as not a vulnerability. They argue that this is an intended design
How severe is CVE-2020-25200?: CVE-2020-25200 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2020-25200 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-25200?: CVE-2020-25200 affects Pritunl. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-25200?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-25200 published?: CVE-2020-25200 was published on 2020-10-01 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:pritunl:pritunl:1.29.2145.25:*:*:*:*:*:*:*

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