macOS TCC Bypass via Code Injection
Priority LOW 15CWE-426Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-426.
Summary
Mattermost Desktop App versions <=5.10.0 explicitly declared unnecessary macOS entitlements which allows an attacker with remote access to bypass Transparency, Consent, and Control (TCC) via code injection.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00173 6th percentileScored 2026-11-07
Fix Fixed Mattermost (Mattermost): 5.11.0mattermost-desktop (npm): 5.11.0
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Mattermost | Mattermost | up to 5.10.0 | 5.11.0 | Patch available | CNA |
| — | mattermost-desktop (npm) | before 5.11.0 | 5.11.0 | Patch available | GHSA-xmvv-w44w-j8wx |
- Mattermost VendorMattermost Affected up to 5.10.0 Fixed in 5.11.0 Patch available CNA
- mattermost-desktop (npm) Vendor— Affected before 5.11.0 Fixed in 5.11.0 Patch available GHSA-xmvv-w44w-j8wx
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mattermost:mattermost_desktop:*:*:*:*:*:*:*:* | before 5.11.0 | Vulnerable | Mattermost |
| cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Apple |
- cpe:2.3:a:mattermost:mattermost_desktop:*:*:*:*:*:*:*:* Versions before 5.11.0 Vulnerable ·Mattermost
- cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Apple
Remediation
- Fix · CNA Mattermost (Mattermost) Fixed in 5.11.0
- Fix · GHSA-xmvv-w44w-j8wx mattermost-desktop (npm) Fixed in 5.11.0 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2025-1398
- 2026-10-03 Alias added: GHSA-xmvv-w44w-j8wx
References
More Mattermost Desktop vulnerabilities
- TI-2019-15074 An issue was discovered in Mattermost Desktop App before 4.3.0 on macOS. CVSS 3.1CRITICAL 9.8
- TI-2016-09099 An issue was discovered in Mattermost Desktop App before 3.4.0. CVSS 3.1CRITICAL 9.8
- TI-2019-15079 An issue was discovered in Mattermost Desktop App before 4.2.2. CVSS 3.1HIGH 8.8
- TI-2024-26542 RCE in desktop app in Windows by local attacker CVSS 3.1HIGH 7.8
- TI-2026-05712 Mattermost Desktop App fails to restrict the allow list of domains which NTLM credentials are passed CVSS 3.1HIGH 7.7
- TI-2026-00781 Arbitrary application execution via unvalidated server-controlled URLs in Help menu CVSS 3.1HIGH 7.6
Sources
- CVE-2025-1398 · CVE Program
- CVE-2025-1398 · NVD
- FIRST EPSS
- GHSA-xmvv-w44w-j8wx · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences