What’s Vulnerable › Vulnerabilities

CVE-2005-3945

• Severity: high (CVSS 7.8 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 12.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2005-12-01 · updated 2026-06-16

Description

The SynAttackProtect protection in Microsoft Windows 2003 before SP1 and Windows 2000 before SP4 with Update Roll-up uses a hash of predictable data, which allows remote attackers to cause a denial of service (CPU consumption) via a flood of SYN packets that produce identical hash values, which slows down the hash table lookups.

Affected products

• Microsoft Windows 2000: all versions
• Microsoft Windows 2003 Server: enterprise, r2, standard, web

References

• http://www.securityfocus.com/archive/1/417952/100/0/threaded
• http://www.securityfocus.com/bid/15613
• http://www.securityfocus.com/archive/1/417952/100/0/threaded
• http://www.securityfocus.com/bid/15613

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