The client in Mumble 1.2.x before 1.2.6 allows remote attackers to force the loading of…
Priority LOW 26CWE-19Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
The client in Mumble 1.2.x before 1.2.6 allows remote attackers to force the loading of an external file and cause a denial of service (hang and resource consumption) via a crafted string that is treated as rich-text by a Qt widget, as demonstrated by the (1) user or (2) channel name in a Qt dialog, (3) subject common name or (4) email address to the Certificate Wizard, or (5) server name in a tooltip.
Why it matters now
EPSS 0.0148 74th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 11
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mumble:mumble:1.2.0:*:*:*:*:*:*:* | 1.2.0 | Vulnerable | Mumble |
| cpe:2.3:a:mumble:mumble:1.2.1:*:*:*:*:*:*:* | 1.2.1 | Vulnerable | Mumble |
| cpe:2.3:a:mumble:mumble:1.2.2:*:*:*:*:*:*:* | 1.2.2 | Vulnerable | Mumble |
| cpe:2.3:a:mumble:mumble:1.2.3:*:*:*:*:*:*:* | 1.2.3 | Vulnerable | Mumble |
| cpe:2.3:a:mumble:mumble:1.2.3:rc1:*:*:*:*:*:* | 1.2.3 rc1 | Vulnerable | Mumble |
| cpe:2.3:a:mumble:mumble:1.2.3:rc2:*:*:*:*:*:* | 1.2.3 rc2 | Vulnerable | Mumble |
| cpe:2.3:a:mumble:mumble:1.2.3:rc3:*:*:*:*:*:* | 1.2.3 rc3 | Vulnerable | Mumble |
| cpe:2.3:a:mumble:mumble:1.2.4:*:*:*:*:*:*:* | 1.2.4 | Vulnerable | Mumble |
| cpe:2.3:a:mumble:mumble:1.2.4:beta1:*:*:*:*:*:* | 1.2.4 beta1 | Vulnerable | Mumble |
| cpe:2.3:a:mumble:mumble:1.2.4:rc1:*:*:*:*:*:* | 1.2.4 rc1 | Vulnerable | Mumble |
- cpe:2.3:a:mumble:mumble:1.2.0:*:*:*:*:*:*:* Versions 1.2.0 Vulnerable ·Mumble
- cpe:2.3:a:mumble:mumble:1.2.1:*:*:*:*:*:*:* Versions 1.2.1 Vulnerable ·Mumble
- cpe:2.3:a:mumble:mumble:1.2.2:*:*:*:*:*:*:* Versions 1.2.2 Vulnerable ·Mumble
- cpe:2.3:a:mumble:mumble:1.2.3:*:*:*:*:*:*:* Versions 1.2.3 Vulnerable ·Mumble
- cpe:2.3:a:mumble:mumble:1.2.3:rc1:*:*:*:*:*:* Versions 1.2.3 rc1 Vulnerable ·Mumble
- cpe:2.3:a:mumble:mumble:1.2.3:rc2:*:*:*:*:*:* Versions 1.2.3 rc2 Vulnerable ·Mumble
- cpe:2.3:a:mumble:mumble:1.2.3:rc3:*:*:*:*:*:* Versions 1.2.3 rc3 Vulnerable ·Mumble
- cpe:2.3:a:mumble:mumble:1.2.4:*:*:*:*:*:*:* Versions 1.2.4 Vulnerable ·Mumble
- cpe:2.3:a:mumble:mumble:1.2.4:beta1:*:*:*:*:*:* Versions 1.2.4 beta1 Vulnerable ·Mumble
- cpe:2.3:a:mumble:mumble:1.2.4:rc1:*:*:*:*:*:* Versions 1.2.4 rc1 Vulnerable ·Mumble
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2014-3756
- 2026-10-03 Alias added: GHSA-64pr-fwhg-9fg4
References
More Mumble vulnerabilities
- TI-2021-08770 Mumble before 1.3.4 allows remote code execution if a victim navigates to a crafted URL… CVSS 3.1HIGH 8.8
- TI-2018-14720 murmur in Mumble through 1.2.19 before 2018-08-31 mishandles multiple concurrent requests… CVSS 3.0HIGH 7.5
- TI-2020-10938 Qt 5.12.2 through 5.14.2, as used in unofficial builds of Mumble 1.3.0 and other… CVSS 3.1HIGH 7.5
- TI-2010-02390 Mumble: murmur-server has DoS due to malformed client query CVSS 3.1MEDIUM 6.5
- TI-2014-03048 The QSvg module in Qt, as used in the Mumble client 1.2.x before 1.2.6, allows remote… CVSS 2.0MEDIUM 5.0
- TI-2025-43388 Mumble before 1.6.870 is prone to an out-of-bounds array access, which may result in denial of service (client crash). CVSS 3.1MEDIUM 5.3
Sources
- CVE-2014-3756 · CVE Program
- CVE-2014-3756 · NVD
- FIRST EPSS
- GHSA-64pr-fwhg-9fg4 · GitHub Advisory Database · CC BY 4.0
- CVE-2014-3756 · Red Hat security data · CC BY 4.0
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