CVE-2012-4512

HIGHNVD 8.88.8—

8.8

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."

CVSS v3: 8.8
EG Score: 8.8(medium)
EPSS: 93.2%
KEV: Not listed

Published

February 8, 2020

Last Modified

November 21, 2024

References (22)

secalert@redhathttp://archives.neohapsis.com/archives/bugtraq/2012-11/0005.html
secalert@redhathttp://em386.blogspot.com/2010/12/webkit-css-type-confusion.html
secalert@redhathttp://quickgit.kde.org/index.php?p=kdelibs.git&a=commitdiff&h=a872c8a969a8bd3706253d6ba24088e4f07f3352
secalert@redhathttp://rhn.redhat.com/errata/RHSA-2012-1416.html
secalert@redhathttp://rhn.redhat.com/errata/RHSA-2012-1418.html
secalert@redhathttp://secunia.com/advisories/51097
secalert@redhathttp://secunia.com/advisories/51145
secalert@redhathttp://www.nth-dimension.org.uk/pub/NDSA20121010.txt.asc
secalert@redhathttp://www.openwall.com/lists/oss-security/2012/10/11/11
secalert@redhathttp://www.openwall.com/lists/oss-security/2012/10/30/6
secalert@redhathttp://www.securitytracker.com/id?1027709
af854a3a-2127-422b-91ae-364da2661108http://archives.neohapsis.com/archives/bugtraq/2012-11/0005.html
af854a3a-2127-422b-91ae-364da2661108http://em386.blogspot.com/2010/12/webkit-css-type-confusion.html
af854a3a-2127-422b-91ae-364da2661108http://quickgit.kde.org/index.php?p=kdelibs.git&a=commitdiff&h=a872c8a969a8bd3706253d6ba24088e4f07f3352
af854a3a-2127-422b-91ae-364da2661108http://rhn.redhat.com/errata/RHSA-2012-1416.html

Patch Availability(2)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
redhat	kdelibs-6:4.3.4-14.el6_3.2	2012-10-30	redhat
redhat	patch	2012-10-30	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-843Access of Resource Using Incompatible Type (Type Confusion)

All Vendor Advisories

(2)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 8× in last 7d / 8× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:38 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-27 08:05 UTCEG score recompute
2026-05-27 08:05 UTCVendor advisory
2026-05-27 08:05 UTCGHSA enrichment
2026-05-26 13:41 UTCepss_batch
2026-05-26 13:41 UTCepss_batch
2026-05-24 16:43 UTCepss_batch

Frequently asked(5)

What is CVE-2012-4512?

CVE-2012-4512 is a high vulnerability published on February 8, 2020. 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."

When was CVE-2012-4512 disclosed?

CVE-2012-4512 was first published in the National Vulnerability Database on February 8, 2020, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2012-4512 actively exploited?

CVE-2012-4512 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 93.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2012-4512?

CVE-2012-4512 has a CVSS v3 base score of 8.8 (NVD).

How do I remediate CVE-2012-4512?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2012-4512, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2012-4512

Published

Last Modified

References (22)

Patch Availability(2)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2012-4512?

Same vendor

Same CWE

CVE-2012-4512

📅 Published

🔄 Last Modified

🔗 References (22)

Patch Availability(2)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2012-4512?

🔗 Related CVEs(same vendor + same CWE)

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References (22)

Frequently asked(5)

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