CVE-2010-3821

no score yetEPSS 4.4%

WebKit in Apple Safari before 5.0.3 on Mac OS X 10.5 through 10.6 and Windows, and before 4.1.3 on Mac OS X 10.4, does not properly handle the :first-letter pseudo-element in a Cascading Style Sheets (CSS) token sequence, which allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted web site.

EPSS: 4.4% chance of exploitation in the next 30 days; higher than 91% of CVEs (scores of 2026-10-31)
CWE: CWE-119
Published: 2010-11-22
Modified: 2026-06-16
Record from: the NVD, synced 2026-10-19

Affected

apple:safari
apple:webkit

References

http://lists.apple.com/archives/security-announce/2010//Nov/msg00002.html
http://lists.apple.com/archives/security-announce/2010//Nov/msg00003.html
http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00006.html
http://secunia.com/advisories/42314
http://secunia.com/advisories/43068

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