CVE-1999-0993
UnknownEPSS 6.94%
Last modified
CVE-1999-0993 is a vulnerability of currently unknown severity. Modifications to ACLs (Access Control Lists) in Microsoft Exchange 5.5 do not take effect until the directory store cache is refreshed.. EPSS estimates a 6.94% chance of exploitation in the next 30 days.
Description
Modifications to ACLs (Access Control Lists) in Microsoft Exchange 5.5 do not take effect until the directory store cache is refreshed.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Exchange Server | 5.0 |
| Microsoft | Exchange Server | 5.5 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-1999-0993?
Modifications to ACLs (Access Control Lists) in Microsoft Exchange 5.5 do not take effect until the directory store cache is refreshed.
How severe is CVE-1999-0993?
Severity scoring for CVE-1999-0993 is pending analysis. The EPSS model estimates a 6.94% probability of exploitation in the next 30 days.
How do I fix CVE-1999-0993?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
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Are you affected by CVE-1999-0993?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST