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CVE-2009-3720

MEDIUM severity · CVSS 5
5CVSS MEDIUM

Summary

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.

Impact & exploitability

Attack vectorNetwork
Attack complexityLow
Privileges required
User interaction
Confidentiality impactNone
Integrity impactNone
Availability impact
Exploit probability (EPSS)28%

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

Affected products we track (2)

Recommendation

Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.