CVE-2009-3720

MediumCVSS 5.0/10Last modified Jul 20, 2026

Description

The updatePosition function in lib/xmltok_impl.c in libexpat in Expat 2.0.1, as used in Python, PyXML, w3c-libwww, and other software, allows context-dependent attackers to cause a denial of service (application crash) via an XML document with crafted UTF-8 sequences that trigger a buffer over-read, a different vulnerability than CVE-2009-2625.

Metrics

CVSS 2.0 5.0/10AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected software

No affected versions have been published.

Timeline

Published
Nov 3, 2009
Last modified
Jul 20, 2026
NVD status
Modified

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CVE-2009-3720: Medium severity, CVSS 5.0 | Vulnix