LSASS.exe in the Local Security Authority Subsystem Service (LSASS) in Microsoft Windows 2000 SP4, XP SP2 and SP3, and Server 2003 SP2 allows remote authenticated users to cause a denial of service (CPU consumption) via a malformed ISAKMP request over IPsec, aka "Local Security Authority Subsystem Service Resource Exhaustion Vulnerability."
Published Dec 9, 2009
6.8
MEDIUMCVSS 2.0
EPSS 24.70%
Description
LSASS.exe in the Local Security Authority Subsystem Service (LSASS) in Microsoft Windows 2000 SP4, XP SP2 and SP3, and Server 2003 SP2 allows remote authenticated users to cause a denial of service (CPU consumption) via a malformed ISAKMP request over IPsec, aka "Local Security Authority Subsystem Service Resource Exhaustion Vulnerability."
Affected products
No data.
- sp4
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
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.
AV:N/AC:L/Au:S/C:N/I:N/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
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 (28 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 24.70% (0.24705) | 97.83th | v5 (v2026.06.15) |
| Jun 15, 2026 | 24.70% (0.24705) | 97.61th | v5 (v2026.06.15) |
| Apr 30, 2026 | 42.88% (0.42885) | 97.50th | v4 (v2025.03.14) |
| Dec 28, 2025 | 45.40% (0.45401) | 97.48th | v4 (v2025.03.14) |
| Dec 27, 2025 | 40.88% (0.40881) | 97.25th | v4 (v2025.03.14) |
| Dec 25, 2025 | 45.40% (0.45401) | 97.47th | v4 (v2025.03.14) |
| Oct 28, 2025 | 38.94% (0.38941) | 97.08th | v4 (v2025.03.14) |
| Oct 27, 2025 | 40.88% (0.40881) | 97.22th | v4 (v2025.03.14) |
| Oct 1, 2025 | 38.94% (0.38941) | 97.17th | v4 (v2025.03.14) |
| Aug 27, 2025 | 40.88% (0.40881) | 97.28th | v4 (v2025.03.14) |
| Mar 30, 2025 | 53.90% (0.53900) | 97.79th | v4 (v2025.03.14) |
| Mar 29, 2025 | 44.81% (0.44814) | 96.42th | v4 (v2025.03.14) |
| Mar 17, 2025 | 53.90% (0.53900) | 97.74th | v4 (v2025.03.14) |
| Mar 4, 2025 | 10.24% (0.10238) | 95.08th | v3 (v2023.03.01) |
| Dec 17, 2024 | 13.80% (0.13798) | 95.62th | v3 (v2023.03.01) |
| Aug 29, 2024 | 7.50% (0.07499) | 94.25th | v3 (v2023.03.01) |
| Jan 27, 2024 | 9.23% (0.09229) | 94.12th | v3 (v2023.03.01) |
| Sep 14, 2023 | 9.29% (0.09291) | 93.95th | v3 (v2023.03.01) |
| May 7, 2023 | 7.61% (0.07610) | 93.15th | v3 (v2023.03.01) |
| Mar 7, 2023 | 10.80% (0.10798) | 94.13th | v3 (v2023.03.01) |
| Mar 6, 2023 | 8.63% (0.08627) | 93.94th | v2 (v2022.01.01) |
| Nov 3, 2022 | 8.63% (0.08627) | 93.76th | v2 (v2022.01.01) |
| Jul 18, 2022 | 10.18% (0.10184) | 94.28th | v2 (v2022.01.01) |
| Jul 17, 2022 | 1.06% (0.01061) | 50.59th | v2 (v2022.01.01) |
| Apr 17, 2022 | 10.18% (0.10184) | 94.13th | v2 (v2022.01.01) |
| Apr 1, 2022 | 11.34% (0.11345) | 94.62th | v2 (v2022.01.01) |
| Feb 7, 2022 | 11.34% (0.11345) | 88.72th | v2 (v2022.01.01) |
| Feb 4, 2022 | 15.48% (0.15482) | 92.53th | v2 (v2022.01.01) |
References (3)
- http://www.us-cert.gov/cas/techalerts/TA09-342A.html third-party-advisoryx_refsource_CERTUS Government Resource
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-069 vendor-advisoryx_refsource_MS
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6639 vdb-entrysignaturex_refsource_OVAL
| Link | Providers | Tags |
|---|---|---|
| http://www.us-cert.gov/cas/techalerts/TA09-342A.html | third-party-advisoryx_refsource_CERTUS Government Resource | |
| https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-069 | vendor-advisoryx_refsource_MS | |
| https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6639 | vdb-entrysignaturex_refsource_OVAL |
Change history (0)
No recorded changes yet.