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CWE-20

12,723 CVEs • Abstraction: Class • Likelihood of Exploit: High

Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

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CVEs (12,723)

CVE
VENDORS
PRODUCTS
UPDATED
PUBLISHED
CVSS
CVE-1999-0918
1Microsoft
4Windows 2000
Windows 95Windows 98+1 more
Apr 16, 2026
Jul 3, 1999
N/A· v4
N/A· v3
7.8 HIGH· v2
Denial of service in various Windows systems via malformed, fragmented IGMP packets.
CVE-1999-0726
1Microsoft
2Windows 2000
Windows Nt
Apr 16, 2026
Jun 30, 1999
N/A· v4
N/A· v3
7.8 HIGH· v2
An attacker can conduct a denial of service in Windows NT by executing a program with a malformed file image header.
CVE-1999-0265
2Microware
Novell
2Netware
Os 9
Apr 16, 2026
Jan 1, 1997
N/A· v4
N/A· v3
5.0 MEDIUM· v2
ICMP redirect messages may crash or lock up a host.