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CVE-2015-1859

20
FAUCET Score

CVE-2015-1859 describes multiple buffer overflow vulnerabilities in the QtBase module, specifically within the ICO image handler. This flaw affects Qt versions before 4.8.7 and 5.x before 5.4.2, impacting products like Digia Qt and Fedora. A remote attacker could exploit this by providing a specially crafted ICO image, leading to a denial of service (crash) and potentially arbitrary code execution. The vulnerability has a CVSS score of 6.8, indicating medium severity with network access, medium attack complexity, and partial impact on confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
20CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:20:*:*:*:*:*:*:*
21CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:21:*:*:*:*:*:*:*
22CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*
<= 4.8.6CPE matchmatch criteria
cpe:2.3:a:digia:qt:*:*:*:*:*:*:*:*
5.0.0CPE matchmatch criteria
cpe:2.3:a:qt:qt:5.0.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
7.19%
Probability of exploitation in next 30 days
EPSS Percentile
93.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0719 is in the 93rd percentile among its peer group of 19,955 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 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

Patch Available

Vendor Patches (4)

fedorapatch availablevia nvd_reference
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: qt
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: qt4
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: qt

Vendor Advisories (1)

redhatCVE-2015-1859Moderate

qt: segmentation fault in qicohandler.cpp

Mar 11, 2015

References

lists.fedoraproject.org / pipermail/package-announce/2015-April/155424.html
Third Party Advisory
lists.fedoraproject.org / pipermail/package-announce/2015-April/155927.html
PatchThird Party Advisory
lists.fedoraproject.org / pipermail/package-announce/2015-April/155962.html
Third Party Advisory
lists.fedoraproject.org / pipermail/package-announce/2015-April/155976.html
Third Party Advisory
lists.fedoraproject.org / pipermail/package-announce/2015-April/156727.html
Third Party Advisory
lists.qt-project.org / pipermail/announce/2015-April/000067.html
PatchVendor Advisory
security.gentoo.org / glsa/201603-10
securityfocus.com / bid/74307
Third Party AdvisoryVDB Entry
securityfocus.com / bid/74310
ubuntu.com / usn/USN-2626-1