CVE-2025-8402

MEDIUM EPSS 21.5%
Published Aug 21, 202510mo ago · Modified Jun 17, 20262w ago
4.9 CVSS 3.1
Medium
Find Similar
Published Aug 21, 2025 10mo ago
Last Modified Jun 17, 2026 2w ago

Description

Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17, 10.10.x <= 10.10.0, 10.9.x <= 10.9.3 fail to validate import data which allows a system admin to crash the server via the bulk import feature.

CVSS Details

Base Score
4.9
Exploitability
1.2
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required High
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
21.5% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 2

CWE-1287
CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 5

VendorProductVersionRange
mattermostmattermost_server*≥9.11.0  –  <9.11.18
mattermostmattermost_server*≥10.5.0  –  <10.5.9
mattermostmattermost_server*≥10.8.0  –  <10.8.4
mattermostmattermost_server*≥10.9.0  –  <10.9.4
mattermostmattermost_server10.10.0any

References 1

  • mattermost.com https://mattermost.com/security-updates
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.