CVE-1999-1033
Microsoft Outlook Express before 4.72.3612.1700 allows a malicious user to send a message that...
Microsoft Outlook Express before 4.72.3612.1700 allows a malicious user to send a message that contains a .., which can inadvertently cause Outlook to re-enter POP3 command mode and cause the POP3 session to hang.
Exploit likelihood
What each source reports
NVD Score used
Microsoft Outlook Express before 4.72.3612.1700 allows a malicious user to send a message that contains a .., which can inadvertently cause Outlook to re-enter POP3 command mode and cause the POP3 session to hang.
- Record
CVE-1999-1033- 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 Outlook Express before 4.72.3612.1700 allows a malicious user to send a message that contains a .., which can inadvertently cause Outlook to re-enter POP3 command mode and cause the POP3 session to hang.
- Record
CVE-1999-1033- Updated
- 2026-11-02
EUVDEUVD-1999-1014 No score
Microsoft Outlook Express before 4.72.3612.1700 allows a malicious user to send a message that contains a .., which can inadvertently cause Outlook to re-enter POP3 command mode and cause the POP3 session to hang.
- Record
EUVD-1999-1014- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-935q-jf44-fq38 No score
Microsoft Outlook Express before 4.72.3612.1700 allows a malicious user to send a message that...
Microsoft Outlook Express before 4.72.3612.1700 allows a malicious user to send a message that contains a .., which can inadvertently cause Outlook to re-enter POP3 command mode and cause the POP3 session to hang.
- Record
GHSA-935q-jf44-fq38- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | Microsoft Outlook Express 4.27.3110/4.72.3120 - POP Denial of Service | 1999-05-11 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, Exploit-DB, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-1999-1033 is a medium vulnerability (CVSS 5.0) in Microsoft Outlook Express, published May 11, 1999. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 17.5%, the 97th percentile. No source names a fixed version.