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CVE-2013-4549

17
FAUCET Score

CVE-2013-4549 describes a denial-of-service vulnerability in QXmlSimpleReader in Qt before version 5.2, affecting Digia Qt and Qt Qt products. This flaw allows attackers to cause memory exhaustion through an XML Entity Expansion (XEE) attack. The vulnerability has a CVSS score of 5.0, indicating a medium severity with low attack complexity and potential for partial availability impact. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5.1.0CPE matchmatch criteria
cpe:2.3:a:digia:qt:*:*:*:*:*:*:*:*
5.0.2CPE matchmatch criteria
cpe:2.3:a:qt:qt:5.0.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.10%
Probability of exploitation in next 30 days
EPSS Percentile
86.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0311 is in the 81st percentile among its peer group of 23,690 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2013-4549Moderate

QtXML: XML entity expansion denial of service

Dec 5, 2013

References

blog.qt.digia.com / blog/2014/04/24/qt-4-8-6-released
lists.fedoraproject.org / pipermail/package-announce/2014-May/132395.html
lists.opensuse.org / opensuse-updates/2014-01/msg00044.html
lists.opensuse.org / opensuse-updates/2014-01/msg00047.html
lists.opensuse.org / opensuse-updates/2014-01/msg00085.html
lists.opensuse.org / opensuse-updates/2014-01/msg00104.html
lists.opensuse.org / opensuse-updates/2014-01/msg00106.html
lists.qt-project.org / pipermail/announce/2013-December/000036.html
codereview.qt-project.org
codereview.qt-project.org
secunia.com / advisories/56008
Vendor Advisory
secunia.com / advisories/56166
Vendor Advisory
ubuntu.com / usn/USN-2057-1