CVE-2014-3756

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.

Published: 2014-11-16 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2014-3756 is rated Moderate Risk (45.5/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.48%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2014-3756

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.60% 1.48% +0.88%
2 2025-12-28 0.40% 0.60% +0.20%
3 2025-12-27 — 0.40% —

Full EPSS history (14 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2014-3756

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2014-3756

OS Trackers for CVE-2014-3756

vendor priority summary link
debian not yet assigned CVE-2014-3756 not yet assigned priority: Debian including 1 source packages (mumble), 4 status rows across 4 suites (bookworm, bullseye, sid, trixie): resolved 4. https://security-tracker.debian.org/tracker/CVE-2014-3756
gentoo high CVE-2014-3756: 1 GLSA(s) (201406-06), 1 atom(s) (media-sound/mumble); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2014-3756
ubuntu medium CVE-2014-3756 medium priority: Ubuntu including 1 source packages (mumble), 12 status rows across 12 suites (lucid, precise, quantal, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): not-affected 6, ignored 4, released 2. https://ubuntu.com/security/CVE-2014-3756

Affected software / configurations for CVE-2014-3756

Vendor Product Version Raw CPE
mumble mumble 1.2.0 cpe:2.3:a:mumble:mumble:1.2.0:*:*:*:*:*:*:*
mumble mumble 1.2.1 cpe:2.3:a:mumble:mumble:1.2.1:*:*:*:*:*:*:*
mumble mumble 1.2.2 cpe:2.3:a:mumble:mumble:1.2.2:*:*:*:*:*:*:*
mumble mumble 1.2.3 cpe:2.3:a:mumble:mumble:1.2.3:*:*:*:*:*:*:*
mumble mumble 1.2.3 cpe:2.3:a:mumble:mumble:1.2.3:rc1:*:*:*:*:*:*
mumble mumble 1.2.3 cpe:2.3:a:mumble:mumble:1.2.3:rc2:*:*:*:*:*:*
mumble mumble 1.2.3 cpe:2.3:a:mumble:mumble:1.2.3:rc3:*:*:*:*:*:*
mumble mumble 1.2.4 cpe:2.3:a:mumble:mumble:1.2.4:*:*:*:*:*:*:*
mumble mumble 1.2.4 cpe:2.3:a:mumble:mumble:1.2.4:beta1:*:*:*:*:*:*
mumble mumble 1.2.4 cpe:2.3:a:mumble:mumble:1.2.4:rc1:*:*:*:*:*:*
mumble mumble 1.2.5 cpe:2.3:a:mumble:mumble:1.2.5:*:*:*:*:*:*:*

References for CVE-2014-3756

cvelogic Threat Intelligence