CVE-1999-0391

UnknownEPSS 4.89%

Last modified

CVE-1999-0391 is a vulnerability of currently unknown severity. The cryptographic challenge of SMB authentication in Windows 95 and Windows 98 can be reused, allowing an attacker to replay the response and impersonate a user.. EPSS estimates a 4.89% chance of exploitation in the next 30 days.

Description

The cryptographic challenge of SMB authentication in Windows 95 and Windows 98 can be reused, allowing an attacker to replay the response and impersonate a user.

Metrics

EPSS Probability
4.89%

91.0th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersionsUpdate
MicrosoftTerminal ServerAll versions
MicrosoftWindows 2000All versions
MicrosoftWindows Nt3.5.1Sp1
MicrosoftWindows Nt4.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-1999-0391?
The cryptographic challenge of SMB authentication in Windows 95 and Windows 98 can be reused, allowing an attacker to replay the response and impersonate a user.
How severe is CVE-1999-0391?
Severity scoring for CVE-1999-0391 is pending analysis. The EPSS model estimates a 4.89% probability of exploitation in the next 30 days.
How do I fix CVE-1999-0391?
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.

Are you affected by CVE-1999-0391?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST