MEDIUM
The firewall engine in Microsoft Forefront Threat Management Gateway, Medium Business Edition (TMG MBE); and Internet Security and Acceleration (ISA) Server 2004 SP3, 2006, 2006 Supportability Update, and 2006 SP1; does not properly manage the session state of web listeners, which allows remote attackers to cause a denial of service (many stale sessions) via crafted packets, aka "Web Proxy TCP State Limited Denial of Service Vulnerability."
Published Apr 15, 2009
5.0
MEDIUMCVSS 2.0
EPSS 78.50%
Description
The firewall engine in Microsoft Forefront Threat Management Gateway, Medium Business Edition (TMG MBE); and Internet Security and Acceleration (ISA) Server 2004 SP3, 2006, 2006 Supportability Update, and 2006 SP1; does not properly manage the session state of web listeners, which allows remote attackers to cause a denial of service (many stale sessions) via crafted packets, aka "Web Proxy TCP State Limited Denial of Service Vulnerability."
Affected products
No data.
OR
- n/a
- 2004
- 2004
- 2006
- 2006
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.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
78.50% 0.78496
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
EPSS probability 0.78496
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 (45 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 78.50% (0.78496) | 99.58th | v5 (v2026.06.15) |
| Jun 15, 2026 | 78.50% (0.78496) | 99.53th | v5 (v2026.06.15) |
| Mar 4, 2026 | 88.70% (0.88702) | 99.50th | v4 (v2025.03.14) |
| Mar 1, 2026 | 83.64% (0.83635) | 99.27th | v4 (v2025.03.14) |
| Feb 4, 2026 | 88.70% (0.88702) | 99.49th | v4 (v2025.03.14) |
| Feb 1, 2026 | 83.64% (0.83635) | 99.27th | v4 (v2025.03.14) |
| Jan 4, 2026 | 88.70% (0.88702) | 99.48th | v4 (v2025.03.14) |
| Jan 1, 2026 | 83.64% (0.83635) | 99.26th | v4 (v2025.03.14) |
| Dec 4, 2025 | 88.70% (0.88702) | 99.48th | v4 (v2025.03.14) |
| Dec 1, 2025 | 83.64% (0.83635) | 99.25th | v4 (v2025.03.14) |
| Nov 4, 2025 | 88.70% (0.88702) | 99.48th | v4 (v2025.03.14) |
| Nov 1, 2025 | 83.64% (0.83635) | 99.25th | v4 (v2025.03.14) |
| Oct 4, 2025 | 87.88% (0.87884) | 99.44th | v4 (v2025.03.14) |
| Oct 1, 2025 | 82.13% (0.82126) | 99.18th | v4 (v2025.03.14) |
| Sep 4, 2025 | 87.88% (0.87884) | 99.45th | v4 (v2025.03.14) |
| Aug 30, 2025 | 82.13% (0.82126) | 99.17th | v4 (v2025.03.14) |
| Aug 5, 2025 | 87.88% (0.87884) | 99.44th | v4 (v2025.03.14) |
| Aug 1, 2025 | 82.13% (0.82126) | 99.17th | v4 (v2025.03.14) |
| Jul 5, 2025 | 87.88% (0.87884) | 99.43th | v4 (v2025.03.14) |
| Jul 1, 2025 | 82.13% (0.82126) | 99.16th | v4 (v2025.03.14) |
| Jun 4, 2025 | 87.88% (0.87884) | 99.43th | v4 (v2025.03.14) |
| Jun 1, 2025 | 82.13% (0.82126) | 99.16th | v4 (v2025.03.14) |
| May 4, 2025 | 87.88% (0.87884) | 99.42th | v4 (v2025.03.14) |
| May 1, 2025 | 82.13% (0.82126) | 99.15th | v4 (v2025.03.14) |
| Mar 26, 2025 | 87.88% (0.87884) | 99.45th | v4 (v2025.03.14) |
| Mar 25, 2025 | 82.13% (0.82126) | 99.19th | v4 (v2025.03.14) |
| Mar 24, 2025 | 87.88% (0.87884) | 99.46th | v4 (v2025.03.14) |
| Mar 23, 2025 | 82.13% (0.82126) | 99.16th | v4 (v2025.03.14) |
| Mar 21, 2025 | 87.88% (0.87884) | 99.47th | v4 (v2025.03.14) |
| Mar 20, 2025 | 82.13% (0.82126) | 99.20th | v4 (v2025.03.14) |
| Mar 17, 2025 | 87.88% (0.87884) | 99.45th | v4 (v2025.03.14) |
| Dec 12, 2024 | 95.34% (0.95339) | 99.44th | v3 (v2023.03.01) |
| Oct 24, 2024 | 95.34% (0.95339) | 99.42th | v3 (v2023.03.01) |
| Nov 23, 2023 | 94.04% (0.94040) | 98.94th | v3 (v2023.03.01) |
| Oct 13, 2023 | 94.77% (0.94768) | 99.00th | v3 (v2023.03.01) |
| Sep 1, 2023 | 95.34% (0.95339) | 99.09th | v3 (v2023.03.01) |
| Jun 2, 2023 | 96.15% (0.96147) | 99.22th | v3 (v2023.03.01) |
| Apr 17, 2023 | 96.43% (0.96431) | 99.27th | v3 (v2023.03.01) |
| Mar 7, 2023 | 96.58% (0.96582) | 99.30th | v3 (v2023.03.01) |
| Mar 6, 2023 | 52.78% (0.52784) | 98.77th | v2 (v2022.01.01) |
| Jul 18, 2022 | 52.78% (0.52784) | 98.67th | v2 (v2022.01.01) |
| Jul 17, 2022 | 1.32% (0.01319) | 70.15th | v2 (v2022.01.01) |
| Jul 15, 2022 | 52.78% (0.52784) | 98.67th | v2 (v2022.01.01) |
| Mar 9, 2022 | 58.07% (0.58072) | 98.54th | v2 (v2022.01.01) |
| Feb 4, 2022 | 60.29% (0.60291) | 98.62th | v2 (v2022.01.01) |
Weaknesses (0)
No CWE recorded.
References (7)
- http://osvdb.org/53636 vdb-entryx_refsource_OSVDB
- http://secunia.com/advisories/34687 third-party-advisoryx_refsource_SECUNIA
- http://www.securitytracker.com/id?1022045 vdb-entryx_refsource_SECTRACK
- http://www.us-cert.gov/cas/techalerts/TA09-104A.html third-party-advisoryx_refsource_CERTUS Government Resource
- http://www.vupen.com/english/advisories/2009/1030 vdb-entryx_refsource_VUPEN
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-016 vendor-advisoryx_refsource_MS
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6068 vdb-entrysignaturex_refsource_OVAL
| Link | Providers | Tags |
|---|---|---|
| http://osvdb.org/53636 | vdb-entryx_refsource_OSVDB | |
| http://secunia.com/advisories/34687 | third-party-advisoryx_refsource_SECUNIA | |
| http://www.securitytracker.com/id?1022045 | vdb-entryx_refsource_SECTRACK | |
| http://www.us-cert.gov/cas/techalerts/TA09-104A.html | third-party-advisoryx_refsource_CERTUS Government Resource | |
| http://www.vupen.com/english/advisories/2009/1030 | vdb-entryx_refsource_VUPEN | |
| https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-016 | vendor-advisoryx_refsource_MS | |
| https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6068 | vdb-entrysignaturex_refsource_OVAL |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner microsoft
Published Apr 15, 2009
Updated Aug 7, 2024
Reserved Jan 8, 2009
Link CVE-2009-0077
CISA Vulnrichment
Updated n/a