CVE-2003-0818
Multiple integer overflows in Microsoft ASN.1 library (MSASN1.DLL), as used in LSASS.EXE, CRYPT32.DLL, and other Microsoft executables and…
- Published
- Updated
- Reserved
- Assigned by
- mitre
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.
Timeline
ID reserved
By mitre
- 5 months later
· 5 months later
Published
- 21 years later
· 21 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
- EPSS (exploitation in 30 days)
- 82.2% · top 0.3% of all CVEs (8 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
- n/a
Affected products
n/a
- affected n/a
References (12)
- VU#583108 (opens in a new tab)third-party-advisoryx_refsource_CERT-VNx_transferred
- TA04-041A (opens in a new tab)third-party-advisoryx_refsource_CERTx_transferred
- oval:org.mitre.oval:def:653 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- 20040210 EEYE: Microsoft ASN.1 Library Length Overflow Heap Corruption (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 20040210 EEYE: Microsoft ASN.1 Library Bit String Heap Corruption (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- oval:org.mitre.oval:def:799 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- oval:org.mitre.oval:def:796 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- VU#216324 (opens in a new tab)third-party-advisoryx_refsource_CERT-VNx_transferred
- MS04-007 (opens in a new tab)vendor-advisoryx_refsource_MSx_transferred
- 20040210 EEYE: Microsoft ASN.1 Library Bit String Heap Corruption (opens in a new tab)mailing-listx_refsource_NTBUGTRAQx_transferred
- 20040210 EEYE: Microsoft ASN.1 Library Length Overflow Heap Corruption (opens in a new tab)mailing-listx_refsource_NTBUGTRAQx_transferred
- oval:org.mitre.oval:def:797 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2003-0818)Record last updated .