Multiple integer overflows in Microsoft ASN.1 library (MSASN1.DLL), as used in LSASS.EXE, CRYPT32.DLL, and other Microsoft executables and libraries on Windows NT 4.0, 2000, and XP, allow remote attackers to execute arbitrary code via ASN.1 BER encodings with (1) very large length fields that cause arbitrary heap data to be overwritten, or (2) modified bit strings
Published Feb 11, 2004
7.5
HIGHCVSS 2.0
EPSS 82.24%
Description
Multiple integer overflows in Microsoft ASN.1 library (MSASN1.DLL), as used in LSASS.EXE, CRYPT32.DLL, and other Microsoft executables and libraries on Windows NT 4.0, 2000, and XP, allow remote attackers to execute arbitrary code via ASN.1 BER encodings with (1) very large length fields that cause arbitrary heap data to be overwritten, or (2) modified bit strings.
Affected products
No data.
- n/a
- n/a
- n/a
- n/a
- enterprise
- enterprise_64-bit
- r2
- r2
- standard
- web
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 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:N/C:P/I:P/A:P
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 (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 82.24% (0.82241) | 99.65th | v5 (v2026.06.15) |
| Jul 20, 2026 | 82.24% (0.82241) | 99.62th | v5 (v2026.06.15) |
| Jun 20, 2026 | 84.01% (0.84008) | 99.66th | v5 (v2026.06.15) |
| Jun 15, 2026 | 82.24% (0.82241) | 99.61th | v5 (v2026.06.15) |
| Mar 17, 2025 | 89.58% (0.89584) | 99.54th | v4 (v2025.03.14) |
| Dec 12, 2024 | 97.29% (0.97293) | 99.90th | v3 (v2023.03.01) |
| Feb 26, 2024 | 97.36% (0.97363) | 99.89th | v3 (v2023.03.01) |
| Mar 7, 2023 | 97.37% (0.97370) | 99.79th | v3 (v2023.03.01) |
| Mar 6, 2023 | 93.13% (0.93133) | 99.92th | v2 (v2022.01.01) |
| Feb 4, 2022 | 93.13% (0.93133) | 99.92th | v2 (v2022.01.01) |
No CWE recorded.
References (12)
- http://marc.info/?l=bugtraq&m=107643836125615&w=2 mailing-listx_refsource_BUGTRAQ
- http://marc.info/?l=bugtraq&m=107643892224825&w=2 mailing-listx_refsource_BUGTRAQ
- http://marc.info/?l=ntbugtraq&m=107650972617367&w=2 mailing-listx_refsource_NTBUGTRAQ
- http://marc.info/?l=ntbugtraq&m=107650972723080&w=2 mailing-listx_refsource_NTBUGTRAQ
- http://www.kb.cert.org/vuls/id/216324 third-party-advisoryx_refsource_CERT-VNThird Party AdvisoryUS Government Resource
- http://www.kb.cert.org/vuls/id/583108 third-party-advisoryx_refsource_CERT-VNUS Government Resource
- http://www.us-cert.gov/cas/techalerts/TA04-041A.html third-party-advisoryx_refsource_CERTUS Government Resource
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2004/ms04-007 vendor-advisoryx_refsource_MS
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A653 vdb-entrysignaturex_refsource_OVAL
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A796 vdb-entrysignaturex_refsource_OVAL
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A797 vdb-entrysignaturex_refsource_OVAL
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A799 vdb-entrysignaturex_refsource_OVAL
Change history (0)
No recorded changes yet.