peter bassill · operator
$ cve CVE-2009-2494 JSON

CVE-2009-2494

9.8
CRITICAL · CVSS 3.1 · EPSS 42.3% (pctl 99)

Patch early

EPSS 42.3% — above the 10% action threshold.

Description

The Active Template Library (ATL) in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP2, Vista Gold, SP1, and SP2, and Server 2008 Gold and SP2 allows remote attackers to execute arbitrary code via vectors related to erroneous free operations after reading a variant from a stream and deleting this variant, aka "ATL Object Type Mismatch Vulnerability."

Scoring

CVSS9.8 (CRITICAL, v3.1)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS42.33% — more likely to be exploited than 99% of all CVEs
WeaknessCWE-94
On CISA KEVno
Public exploitnone known
Published2009-08-12
Last modified2026-06-16

Affected (5)

VendorProduct
microsoftwindows 2000
microsoftwindows server 2003
microsoftwindows server 2008
microsoftwindows vista
microsoftwindows xp

References

→ the Explorer  ·  watch your stack  ·  NVD