CVE-1999-1164
Microsoft Outlook client allows remote attackers to cause a denial of service by sending multiple...
Microsoft Outlook client allows remote attackers to cause a denial of service by sending multiple email messages with the same X-UIDL headers, which causes Outlook to hang.
Exploit likelihood
What each source reports
NVD Score used
Microsoft Outlook client allows remote attackers to cause a denial of service by sending multiple email messages with the same X-UIDL headers, which causes Outlook to hang.
- Record
CVE-1999-1164- 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 client allows remote attackers to cause a denial of service by sending multiple email messages with the same X-UIDL headers, which causes Outlook to hang.
- Record
CVE-1999-1164- Updated
- 2026-11-02
EUVDEUVD-1999-1145 No score
Microsoft Outlook client allows remote attackers to cause a denial of service by sending multiple email messages with the same X-UIDL headers, which causes Outlook to hang.
- Record
EUVD-1999-1145- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-f498-r72q-hr69 No score
Microsoft Outlook client allows remote attackers to cause a denial of service by sending multiple...
Microsoft Outlook client allows remote attackers to cause a denial of service by sending multiple email messages with the same X-UIDL headers, which causes Outlook to hang.
- Record
GHSA-f498-r72q-hr69- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-1999-1164 is a medium vulnerability (CVSS 5.0) in Microsoft Outlook, published June 25, 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.