CVE-2014-3755: The QSvg module in Qt, as used in the Mumble client 1.2.x before 1.2.6, allows remote attackers to cause a den

Q: How do I fix CVE-2014-3755?

mumble: upgrade to newer than 1.2.5. Exact commands for each OS are on this page.

Q: Is CVE-2014-3755 being exploited?

CVE-2014-3755 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2014-3755 affect?

CVE-2014-3755 affects mumble. Severity is medium (CVSS 5.0). The QSvg module in Qt, as used in the Mumble client 1.2.x before 1.2.6, allows remote attackers to cause a denial of service (hang and resource consumption) via a local file reference in an (1) image tag or (2) XML stylesheet in an SVG file

Q: How urgent is CVE-2014-3755?

Priority 44/100. Public exploit reference

This month

MEDIUM 5.0UPGRADE

CVE-2014-3755 is a medium-severity flaw (CVSS 5.0) affecting mumble. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The QSvg module in Qt, as used in the Mumble client 1.2.x before 1.2.6, allows remote attackers to cause a denial of service (hang and resource consumption) via a local file reference in an (1) image tag or (2) XML stylesheet in an SVG file.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	2.5% (top 15%)
CISA exploited list	No
Weakness	CWE-399
Published	2014-11-16
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: mumble

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2014-11-16 11:59 UTCPublished CVE record published
2026-06-17 00:08 UTCUpdated Record last modified

mumble mumble UPGRADE

Affected: <= 1.2.5 · 1.2.0 · 1.2.1 · 1.2.2 · 1.2.3 · 1.2.3 rc1 · 1.2.3 rc2 · 1.2.3 rc3

Fixed in: newer than 1.2.5

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy mumble || rpm -q mumble || mumble --version

2. UPGRADE to newer than 1.2.5 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade mumble

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade mumble

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2014-3755?

mumble: upgrade to newer than 1.2.5. Exact commands for each OS are on this page.

Is CVE-2014-3755 being exploited?

CVE-2014-3755 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2014-3755 affect?

CVE-2014-3755 affects mumble. Severity is medium (CVSS 5.0). The QSvg module in Qt, as used in the Mumble client 1.2.x before 1.2.6, allows remote attackers to cause a denial of service (hang and resource consumption) via a local file reference in an (1) image tag or (2) XML stylesheet in an SVG file

How urgent is CVE-2014-3755?

Priority 44/100. Public exploit reference

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References

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