CVE-2025-25279

highpriority · attend · 48EPSS 0.242 · 98 %ileexploit · PoCDEEUNLRUUS
grimoire priorityP1 · Urgent
Exploitable?
Public exploit
2 exploits · PoC
Likely / severe?
24.2% (98th) EPSS
CVSS 7.5 · high
Is it mine?
34 products
Check your exposure
Who says so?
7 sources
cnnvd · enisa_euvd · fstec_bdu · osv

EPSS · scored 2026-10-27

Mattermost versions 10.4.x <= 10.4.1, 9.11.x <= 9.11.7, 10.3.x <= 10.3.2, 10.2.x <= 10.2.2 fail to properly validate board blocks when importing boards which allows an attacker could read any arbitrary file on the system via importing and exporting a specially crafted import archive in Boards.

01

cvss

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

9.9
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.1–9.9

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 3.6
v3.19.9criticalAV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU
v3.19.9criticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:Hsecondary · ENISA EU
v3.19.9criticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:Hsecondary · responsibledisclosure@mattermost.comexploitability 3.1 · impact 6
v3.19.9criticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:Hsecondary · OSV
v3.17.1highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:Psecondary · CVSS-BT (t0sche)
v3.19.9criticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:Hsecondary · NCSC-NL NL
02

ssvc

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

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-22USCWE-22USCWE-22USCWE-22US
04

exploits (2)

Public proof-of-concept and weaponised exploit code.

05

affected products (34)

Products and version ranges known to be affected.

showing 20 of 34
06

advisories (4)

Vendor and ecosystem advisories describing this.

  • NCSC-2025-0068Kwetsbaarheden verholpen in MattermostNL2025-02-24csaf · ncsc_nlNL

    Mattermost heeft kwetsbaarheden verholpen in versies 10.4.x, 9.11.x, 10.3.x, 10.2.x en 10.1.x.

  • WID-SEC-W-2025-0187Mattermost: Mehrere SchwachstellenDeutsch2025-01-23csaf · cert_bundDE

    Ein Angreifer kann mehrere Schwachstellen in Mattermost ausnutzen, um einen SQL Angriff durchzuführen oder Informationen offenzulegen.

  • GHSA-5fwx-p6xh-vjrhMattermost allows reading arbitrary files related to importing boards2025-02-24ghsa · osvUS

    Mattermost versions 10.4.x <= 10.4.1, 9.11.x <= 9.11.7, 10.3.x <= 10.3.2, 10.2.x <= 10.2.2 fail to properly validate board blocks when importing boards which allows an attacker could read any arbitrary file on the system via importing and exporting a specially crafted import archive in Boards.

  • GO-2025-3480Mattermost allows reading arbitrary files related to importing boards in github.com/mattermost/mattermost-server2025-03-03vendor · osvUS

    Mattermost allows reading arbitrary files related to importing boards in github.com/mattermost/mattermost-server

07

also known as (6)

Other names and identifiers for this entity.

08

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bduosvcert_bundncsc_nlnvdNVDCVE.orgMITRE
published 2025-02-24modified 2026-06-17
09

references (4)

External citations — patches, advisories, analysis.

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