CVE-2023-25818

highpriority · track · 28EPSS 0.006 · 49 %ileEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.60% (49th) EPSS

CVSS 7.1 · high

Is it mine?

13 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

Nextcloud server is an open source, personal cloud implementation. In affected versions a malicious user could try to reset the password of another user and then brute force the 62^21 combinations for the password reset token. As of commit `704eb3aa` password reset attempts are now throttled. Note that 62^21 combinations would significant compute resources to brute force. None the less it is recommended that the Nextcloud Server is upgraded to 24.0.10 or 25.0.4. There are no known workarounds for this vulnerability.

cvss

Technical severity, 0–10. One row per scoring source.

7.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.3–7.1

v3.17.1highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 4.2

v3.17.1highAV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:Nsecondary · FSTEC (BDU) RU

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Nsecondary · ENISA EU

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Nsecondary · security-advisories@github.comexploitability 3.9 · impact 1.4

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-307USprimaryCWE-307US

affected products (13)

Products and version ranges known to be affected.

nextcloud security-advisories24.0.0, → 24.0.10enisa_euvdEU
nextcloud security-advisories25.0.0, → 25.0.4enisa_euvdEU
Nextcloud GmbH Nextcloud Server21.0.0 → 21.0.9.10fstec_bduRU
Nextcloud GmbH Nextcloud Server22.0.0 → 22.2.10.10fstec_bduRU
Nextcloud GmbH Nextcloud Server23.0.0 → 23.0.12.5fstec_bduRU
Nextcloud GmbH Nextcloud Server24.0.0 → 24.0.10fstec_bduRU
Nextcloud GmbH Nextcloud Server25.0.0 → 25.0.4fstec_bduRU
ООО «Ред Софт» РЕД ОС≤ 7.3fstec_bduRU
nextcloud nextcloud server21.0.0 → 21.0.9.10nvdUScpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*
nextcloud nextcloud server22.0.0 → 22.2.10.10nvdUScpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*
nextcloud nextcloud server23.0.0 → 23.0.12.5nvdUScpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*
nextcloud nextcloud server24.0.0 → 24.0.10nvdUScpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*
nextcloud nextcloud server25.0.0 → 25.0.4nvdUScpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2023-03-27modified 2026-06-17

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references (10)

External citations — patches, advisories, analysis.

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