Unrated severityNVD Advisory· Published Dec 31, 1999· Updated Apr 16, 2026

CVE-1999-1476

Description

A bug in Intel Pentium processor (MMX and Overdrive) allows local users to cause a denial of service (hang) in Intel-based operating systems such as Windows NT and Windows 95, via an invalid instruction, aka the "Invalid Operand with Locked CMPXCHG8B Instruction" problem.

Affected products

Intel/Pentium
cpe:2.3:h:intel:pentium:*:*:mmx:*:*:*:*:*
Intel/Pentuim
cpe:2.3:h:intel:pentuim:*:*:overdrive:*:*:*:*:*

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

support.microsoft.com/support/kb/articles/q163/8/52.aspnvdPatchVendor Advisory
exchange.xforce.ibmcloud.com/vulnerabilities/704nvd

News mentions

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