CRITICAL
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."
Published Aug 12, 2009
9.8
CRITICALCVSS 3.1
EPSS 42.33%
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."
Affected products
No data.
OR
- n/a
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No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
9.8 CRITICAL CISA ADP
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
No CVSS v3.0 score for this CVE.
10.0 HIGH NVD
AV:N/AC:L/Au:N/C:C/I:C/A:C
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
YesTechnical Impact
TotalDecision
n/aAssessed Dec 12, 2023 · SSVC 2.0.3
42.33% 0.42329
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
EPSS probability 0.42329
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (30 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 42.33% (0.42329) | 98.66th | v5 (v2026.06.15) |
| Jun 15, 2026 | 42.33% (0.42329) | 98.52th | v5 (v2026.06.15) |
| Feb 28, 2026 | 63.30% (0.63300) | 98.37th | v4 (v2025.03.14) |
| Dec 28, 2025 | 60.59% (0.60593) | 98.20th | v4 (v2025.03.14) |
| Dec 27, 2025 | 57.18% (0.57185) | 98.05th | v4 (v2025.03.14) |
| Oct 28, 2025 | 60.59% (0.60593) | 98.19th | v4 (v2025.03.14) |
| Oct 27, 2025 | 57.18% (0.57185) | 98.02th | v4 (v2025.03.14) |
| Oct 1, 2025 | 60.59% (0.60593) | 98.25th | v4 (v2025.03.14) |
| Mar 30, 2025 | 57.18% (0.57185) | 97.96th | v4 (v2025.03.14) |
| Mar 29, 2025 | 63.00% (0.62999) | 97.71th | v4 (v2025.03.14) |
| Mar 17, 2025 | 57.18% (0.57185) | 97.92th | v4 (v2025.03.14) |
| Dec 12, 2024 | 91.80% (0.91800) | 99.06th | v3 (v2023.03.01) |
| Aug 25, 2024 | 91.80% (0.91800) | 98.98th | v3 (v2023.03.01) |
| Jul 19, 2024 | 93.02% (0.93017) | 99.08th | v3 (v2023.03.01) |
| Feb 10, 2024 | 92.92% (0.92916) | 98.94th | v3 (v2023.03.01) |
| Dec 30, 2023 | 93.45% (0.93451) | 98.90th | v3 (v2023.03.01) |
| Dec 8, 2023 | 93.63% (0.93627) | 98.89th | v3 (v2023.03.01) |
| Sep 30, 2023 | 94.39% (0.94392) | 98.93th | v3 (v2023.03.01) |
| Jul 1, 2023 | 94.76% (0.94758) | 98.89th | v3 (v2023.03.01) |
| Apr 5, 2023 | 94.81% (0.94808) | 98.79th | v3 (v2023.03.01) |
| Mar 7, 2023 | 95.11% (0.95107) | 98.83th | v3 (v2023.03.01) |
| Mar 6, 2023 | 46.72% (0.46718) | 98.56th | v2 (v2022.01.01) |
| Jan 13, 2023 | 46.72% (0.46718) | 98.53th | v2 (v2022.01.01) |
| Nov 12, 2022 | 49.76% (0.49756) | 98.66th | v2 (v2022.01.01) |
| Sep 10, 2022 | 55.10% (0.55095) | 98.72th | v2 (v2022.01.01) |
| Jul 18, 2022 | 57.79% (0.57789) | 98.78th | v2 (v2022.01.01) |
| Jul 17, 2022 | 11.27% (0.11270) | 94.87th | v2 (v2022.01.01) |
| Jul 7, 2022 | 57.79% (0.57789) | 98.76th | v2 (v2022.01.01) |
| May 3, 2022 | 60.01% (0.60013) | 98.80th | v2 (v2022.01.01) |
| Feb 4, 2022 | 69.86% (0.69860) | 98.97th | v2 (v2022.01.01) |
Weaknesses (1)
References (9)
- http://blogs.technet.com/srd/archive/2009/08/11/ms09-037-why-we-are-using-cve-s-already-used-in-ms09-035.aspx x_refsource_MISC
- http://osvdb.org/56910 vdb-entryx_refsource_OSVDB
- http://secunia.com/advisories/36187 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://www.securityfocus.com/bid/35982 vdb-entryx_refsource_BIDPatch
- http://www.securitytracker.com/id?1022712 vdb-entryx_refsource_SECTRACK
- http://www.us-cert.gov/cas/techalerts/TA09-223A.html third-party-advisoryx_refsource_CERTUS Government Resource
- http://www.vupen.com/english/advisories/2009/2232 vdb-entryx_refsource_VUPENVendor Advisory
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-037 vendor-advisoryx_refsource_MS
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5708 vdb-entrysignaturex_refsource_OVAL
| Link | Providers | Tags |
|---|---|---|
| http://blogs.technet.com/srd/archive/2009/08/11/ms09-037-why-we-are-using-cve-s-already-used-in-ms09-035.aspx | x_refsource_MISC | |
| http://osvdb.org/56910 | vdb-entryx_refsource_OSVDB | |
| http://secunia.com/advisories/36187 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://www.securityfocus.com/bid/35982 | vdb-entryx_refsource_BIDPatch | |
| http://www.securitytracker.com/id?1022712 | vdb-entryx_refsource_SECTRACK | |
| http://www.us-cert.gov/cas/techalerts/TA09-223A.html | third-party-advisoryx_refsource_CERTUS Government Resource | |
| http://www.vupen.com/english/advisories/2009/2232 | vdb-entryx_refsource_VUPENVendor Advisory | |
| https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-037 | vendor-advisoryx_refsource_MS | |
| https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5708 | vdb-entrysignaturex_refsource_OVAL |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner microsoft
Published Aug 12, 2009
Updated Jan 21, 2025
Reserved Jul 17, 2009
Link CVE-2009-2494
CISA Vulnrichment
Updated Dec 12, 2023