CVE-2010-1421

The execCommand JavaScript function in WebKit in Apple Safari before 5.0 on Mac OS X 10.5 through...

4.3 Medium

The execCommand JavaScript function in WebKit in Apple Safari before 5.0 on Mac OS X 10.5 through 10.6 and Windows, and before 4.1 on Mac OS X 10.4, does not properly restrict remote execution of clipboard commands, which allows remote attackers to modify the clipboard via a crafted HTML document.

Exploit likelihood

4.15%Down 5.0 points since Feb 4, 2022

What each source reports

NVD Score used 4.3

Record: CVE-2010-1421
CVSS 2.0: 4.3 MediumAV:N/AC:M/Au:N/C:N/I:P/A:N
Updated: 2026-11-02

CVE List No score

Record: CVE-2010-1421
Updated: 2026-11-02

EUVDEUVD-2010-1449 No score

Record: EUVD-2010-1449
Updated: 2026-11-03

GitHub AdvisoriesGHSA-8j2w-cfwg-jr68 No score

The execCommand JavaScript function in WebKit in Apple Safari before 5.0 on Mac OS X 10.5 through...

Record: GHSA-8j2w-cfwg-jr68
Updated: 2026-11-02

Affected products

History

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

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

In short

CVE-2010-1421 is a medium vulnerability (CVSS 4.3) in Apple Safari, published June 11, 2010. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 4.15%, the 90th percentile. No source names a fixed version.

References

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