How severe is CVE-2023-25816?

CVE-2023-25816 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2023-25816 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-25816?

CVE-2023-25816 primarily affects Nextcloud Nextcloud Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-25816?

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

When was CVE-2023-25816 published?

CVE-2023-25816 was published on 2023-02-25 and last updated on 2026-06-17.

CVE-2023-25816

CVE-2023-25816 is a medium-severity vulnerability in Nextcloud Nextcloud Server with a CVSS 3.x base score of 4.3. 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-400.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-400
Affected product: Nextcloud Nextcloud Server
Published: 2023-02-25
Last modified: 2026-06-17

Description

Nextcloud is an Open Source private cloud software. Versions 25.0.0 and above, prior to 25.0.3, are subject to Uncontrolled Resource Consumption. A user can configure a very long password, consuming more resources on password validation than desired. This issue is patched in 25.0.3 No workaround is available.

Frequently asked questions

What is CVE-2023-25816?: Nextcloud is an Open Source private cloud software. Versions 25.0.0 and above, prior to 25.0.3, are subject to Uncontrolled Resource Consumption. A user can configure a very long password, consuming more resources on password validation than desired. This issue is patched in 25.0.3 No workaround is available.
How severe is CVE-2023-25816?: CVE-2023-25816 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2023-25816 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-25816?: CVE-2023-25816 primarily affects Nextcloud Nextcloud Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-25816?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-25816 published?: CVE-2023-25816 was published on 2023-02-25 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*
cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*

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