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CVE-2012-4513: khtml/imload/scaledimageplane.h in Konqueror in KDE 4.7.3 allows remote attackers to cause a denial of service (crash) and possibly read…

MediumCVSS 6.4 · v2.0—Proof of concept Fix available

Noroxi assessment

Priority: Monitor (action score 29/100)

  • Public proof-of-concept code exists (Exploit-DB); there is no record of exploitation in the wild.
  • Probability of exploitation in the next 30 days: 12.5% (FIRST EPSS); higher than 96.3% of all records.
  • No special conditions are required; it is repeatable.
  • Fixed version: kdelibs (Red Hat:enterprise_linux:6::client) 6:4.3.4-14.el6_3.2; kdelibs-apidocs (Red Hat:enterprise_linux:6::client) 6:4.3.4-14.el6_3.2; kdelibs-common (Red Hat:enterprise_linux:6::client) 6:4.3.4-14.el6_3.2.

Low priority for now. Upgrade to kdelibs (Red Hat:enterprise_linux:6::client) 6:4.3.4-14.el6_3.2; kdelibs-apidocs (Red Hat:enterprise_linux:6::client) 6:4.3.4-14.el6_3.2; kdelibs-common (Red Hat:enterprise_linux:6::client) 6:4.3.4-14.el6_3.2 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

khtml/imload/scaledimageplane.h in Konqueror in KDE 4.7.3 allows remote attackers to cause a denial of service (crash) and possibly read memory via large canvas dimensions, which leads to an unexpected sign extension and a heap-based buffer over-read.

Published
Nov 11, 2012
Updated
Jun 16, 2026
EPSS
12.5% · 96th percentile

Report tools

JSON

Action score

29

Monitor

Low priority for now.

CVSS
25 / 40 · 6.4 / 10
CISA KEV
0 / 30 · Not listed
EPSS
4 / 30 · 12.5%

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  • Not in KEV: no record of exploitation in the wild
  • Proof of concept exists, no weaponized module
  • A fix has been released

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  • when exploit code appears or is weaponized
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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
kdekde

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • kde kde4.7.3

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Red Hat:enterprise_linux:6::clientkdelibsbefore 6:4.3.4-14.el6_3.26:4.3.4-14.el6_3.2
Red Hat:enterprise_linux:6::clientkdelibs-apidocsbefore 6:4.3.4-14.el6_3.26:4.3.4-14.el6_3.2
Red Hat:enterprise_linux:6::clientkdelibs-commonbefore 6:4.3.4-14.el6_3.26:4.3.4-14.el6_3.2
Red Hat:enterprise_linux:6::clientkdelibs-debuginfobefore 6:4.3.4-14.el6_3.26:4.3.4-14.el6_3.2
Red Hat:enterprise_linux:6::clientkdelibs-develbefore 6:4.3.4-14.el6_3.26:4.3.4-14.el6_3.2

Same product

kde: all records

Other highest-scoring records for the same primary product.

  • CVE-2005-0011Multiple vulnerabilities in fliccd, when installed setuid root as part of the kdeedu Kstars support for Instrument Neutral Distributed…
    41Plan
  • CVE-2003-0690KDM in KDE 3.1.3 and earlier does not verify whether the pam_setcred function call succeeds, which may allow attackers to gain root…
    41Plan
  • CVE-2012-4512The CSS parser (khtml/css/cssparser.cpp) in Konqueror in KDE 4.7.3 allows remote attackers to cause a denial of service (crash) and…
    38Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2008-1671Apr 28, 2008 · start_kdeinit in KDE 3.5.5 through 3.5.9, when installed setuid root, allows local users to cause a denial of service and possibly execute…
    18Monitor
  • ← EarlierCVE-2008-5698Dec 22, 2008 · HTMLTokenizer::scriptHandler in Konqueror in KDE 3.5.9 and 3.5.10 allows remote attackers to cause a denial of service (application crash)…
    18Monitor
  • Later →CVE-2012-4514Nov 11, 2012 · rendering/render_replaced.cpp in Konqueror in KDE before 4.9.3 allows remote attackers to cause a denial of service (NULL pointer…
    23Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
red hat:kdelibs6:4.3.4-14.el6_3.2 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:kdelibs-apidocs6:4.3.4-14.el6_3.2 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:kdelibs-common6:4.3.4-14.el6_3.2 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:kdelibs-debuginfo6:4.3.4-14.el6_3.2 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:kdelibs-devel6:4.3.4-14.el6_3.2 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

  • Exploit-DB entry ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Exploit-DB entrydos2012-11-01

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. First PoC-10 d
  2. Published
  3. TodayNov 15, 2026+5117 d

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • No special conditions are required; it is repeatable.

If successful

Confidentiality
P · data can be read
Integrity
none
Availability
P · the service can be disrupted
Attack complexity
Low
Confidentiality impact
P
Integrity impact
None
Availability impact
P

Weakness class (CWE)

CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

References

Show all references (8 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records