CVE-1999-1043
Microsoft Exchange Server 5.5 and 5.0 does not properly handle (1) malformed NNTP data, or (2)...
Microsoft Exchange Server 5.5 and 5.0 does not properly handle (1) malformed NNTP data, or (2) malformed SMTP data, which allows remote attackers to cause a denial of service (application error).
Exploit likelihood
What each source reports
NVD Score used
Microsoft Exchange Server 5.5 and 5.0 does not properly handle (1) malformed NNTP data, or (2) malformed SMTP data, which allows remote attackers to cause a denial of service (application error).
- Record
CVE-1999-1043- CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Updated
- 2026-11-02
CVE List No score
Microsoft Exchange Server 5.5 and 5.0 does not properly handle (1) malformed NNTP data, or (2) malformed SMTP data, which allows remote attackers to cause a denial of service (application error).
- Record
CVE-1999-1043- Updated
- 2026-11-02
EUVDEUVD-1999-1024 No score
Microsoft Exchange Server 5.5 and 5.0 does not properly handle (1) malformed NNTP data, or (2) malformed SMTP data, which allows remote attackers to cause a denial of service (application error).
- Record
EUVD-1999-1024- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-hjv9-q8gw-pmgm No score
Microsoft Exchange Server 5.5 and 5.0 does not properly handle (1) malformed NNTP data, or (2)...
Microsoft Exchange Server 5.5 and 5.0 does not properly handle (1) malformed NNTP data, or (2) malformed SMTP data, which allows remote attackers to cause a denial of service (application error).
- Record
GHSA-hjv9-q8gw-pmgm- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-1999-1043 is a medium vulnerability (CVSS 5.0) in Microsoft Exchange Server, published December 31, 1999. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 13.2%, the 96th percentile. No source names a fixed version.