CVE-2003-0818
Status: ModifiedHigh (7.5)—💥 Exploit
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.
CVSS
- Version: 2.0
- Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
- Base score: 7.5
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days: 82%
- Percentile among all scored CVEs: 100
- Score date: 10/7/2026
EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).
💥 Public exploits
Exploit code or detection templates are publicly available. This is not the same as confirmed active exploitation (KEV), but it raises the risk: patch with priority.
- Metasploit module (reliable, widely available exploit) · MS04-007 Microsoft ASN.1 Library Bitstring Heap Overflow
- Published on Exploit-DB · Microsoft Windows - ASN.1 Library Bitstring Heap Overflow (MS04-007) (Metasploit) (7/25/2010)
- Published on Exploit-DB · Microsoft Windows - ASN.1 Remote (MS04-007) (3/26/2004)
- Published on Exploit-DB · Microsoft Windows - ASN.1 'LSASS.exe' Remote Denial of Service (MS04-007) (2/14/2004)
Affected technologies (4)
CWEs
- NVD-CWE-Other
References
- http://marc.info/?l=bugtraq&m=107643836125615&w=2
- http://marc.info/?l=bugtraq&m=107643892224825&w=2
- http://marc.info/?l=ntbugtraq&m=107650972617367&w=2
- http://marc.info/?l=ntbugtraq&m=107650972723080&w=2
- http://www.kb.cert.org/vuls/id/216324
- http://www.kb.cert.org/vuls/id/583108
- http://www.us-cert.gov/cas/techalerts/TA04-041A.html
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2004/ms04-007
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A653
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A796
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A797
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A799
- http://marc.info/?l=bugtraq&m=107643836125615&w=2
- http://marc.info/?l=bugtraq&m=107643892224825&w=2
- http://marc.info/?l=ntbugtraq&m=107650972617367&w=2
- http://marc.info/?l=ntbugtraq&m=107650972723080&w=2
- http://www.kb.cert.org/vuls/id/216324
- http://www.kb.cert.org/vuls/id/583108
- http://www.us-cert.gov/cas/techalerts/TA04-041A.html
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2004/ms04-007
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A653
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A796
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A797
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A799
Raw JSON (NVD)
Show
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