CVE-2012-4512

The CSS parser (khtml/css/cssparser.cpp) in Konqueror in KDE 4.7.3 allows remote attackers to...

8.8 HighPublic exploitFix available

The CSS parser (khtml/css/cssparser.cpp) in Konqueror in KDE 4.7.3 allows remote attackers to cause a denial of service (crash) and possibly read memory via a crafted font face source, related to "type confusion."

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

11.7%Up 9.7 points since Feb 4, 2022

What each source reports

NVD Score used 8.8

Record: CVE-2012-4512
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0: 6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness: CWE-843
Updated: 2026-11-02

CVE List No score

Record: CVE-2012-4512
Updated: 2026-11-02

EUVDEUVD-2012-4441 No score

Record: EUVD-2012-4441
Updated: 2026-11-03

GitHub AdvisoriesGHSA-8m6q-hj66-2cmr 8.8

The CSS parser (khtml/css/cssparser.cpp) in Konqueror in KDE 4.7.3 allows remote attackers to...

Record: GHSA-8m6q-hj66-2cmr
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-843
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`kdelibs` Red Hat:enterprise_linux:6::client	before 6:4.3.4-14.el6_3.2	6:4.3.4-14.el6_3.2
`kdelibs-common` Red Hat:enterprise_linux:6::client	before 6:4.3.4-14.el6_3.2	6:4.3.4-14.el6_3.2
`kdelibs-debuginfo` Red Hat:enterprise_linux:6::client	before 6:4.3.4-14.el6_3.2	6:4.3.4-14.el6_3.2
`kdelibs-apidocs` Red Hat:enterprise_linux:6::client	before 6:4.3.4-14.el6_3.2	6:4.3.4-14.el6_3.2
`kdelibs-devel` Red Hat:enterprise_linux:6::client	before 6:4.3.4-14.el6_3.2	6:4.3.4-14.el6_3.2
`kdelibs` Red Hat:enterprise_linux:6::computenode	before 6:4.3.4-14.el6_3.2	6:4.3.4-14.el6_3.2
`kdelibs-apidocs` Red Hat:enterprise_linux:6::computenode	before 6:4.3.4-14.el6_3.2	6:4.3.4-14.el6_3.2
`kdelibs-common` Red Hat:enterprise_linux:6::computenode	before 6:4.3.4-14.el6_3.2	6:4.3.4-14.el6_3.2
`kdelibs-debuginfo` Red Hat:enterprise_linux:6::computenode	before 6:4.3.4-14.el6_3.2	6:4.3.4-14.el6_3.2
`kdelibs-devel` Red Hat:enterprise_linux:6::computenode	before 6:4.3.4-14.el6_3.2	6:4.3.4-14.el6_3.2

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Affected packages
Package	Affected	Fixed
`kdelibs` Red Hat:enterprise_linux:6::server	before 6:4.3.4-14.el6_3.2	6:4.3.4-14.el6_3.2
`kdelibs-apidocs` Red Hat:enterprise_linux:6::server	before 6:4.3.4-14.el6_3.2	6:4.3.4-14.el6_3.2
`kdelibs-common` Red Hat:enterprise_linux:6::server	before 6:4.3.4-14.el6_3.2	6:4.3.4-14.el6_3.2
`kdelibs-debuginfo` Red Hat:enterprise_linux:6::server	before 6:4.3.4-14.el6_3.2	6:4.3.4-14.el6_3.2
`kdelibs-devel` Red Hat:enterprise_linux:6::server	before 6:4.3.4-14.el6_3.2	6:4.3.4-14.el6_3.2
`kdelibs` Red Hat:enterprise_linux:6::workstation	before 6:4.3.4-14.el6_3.2	6:4.3.4-14.el6_3.2
`kdelibs-apidocs` Red Hat:enterprise_linux:6::workstation	before 6:4.3.4-14.el6_3.2	6:4.3.4-14.el6_3.2
`kdelibs-common` Red Hat:enterprise_linux:6::workstation	before 6:4.3.4-14.el6_3.2	6:4.3.4-14.el6_3.2
`kdelibs-debuginfo` Red Hat:enterprise_linux:6::workstation	before 6:4.3.4-14.el6_3.2	6:4.3.4-14.el6_3.2
`kdelibs-devel` Red Hat:enterprise_linux:6::workstation	before 6:4.3.4-14.el6_3.2	6:4.3.4-14.el6_3.2

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Exploit-DB	Konqueror 4.7.3 - Memory Corruption	2012-11-01

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, Exploit-DB, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2012-4512 is a high vulnerability (CVSS 8.8) in Kde, published February 8, 2020. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 11.7%, the 96th percentile. Fixed in kdelibs 6:4.3.4-14.el6_3.2.

References

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