CVE-2003-0110

CVE-2003-0110 is a medium-severity vulnerability in Microsoft Isa Server with a CVSS 2.0 base score of 5.0. Its EPSS exploit-prediction score of 18% places it in the 97th percentile, indicating an elevated likelihood of exploitation.

Key facts

Description

The Winsock Proxy service in Microsoft Proxy Server 2.0 and the Microsoft Firewall service in Internet Security and Acceleration (ISA) Server 2000 allow remote attackers to cause a denial of service (CPU consumption or packet storm) via a spoofed, malformed packet to UDP port 1745.

Frequently asked questions

What is CVE-2003-0110?
The Winsock Proxy service in Microsoft Proxy Server 2.0 and the Microsoft Firewall service in Internet Security and Acceleration (ISA) Server 2000 allow remote attackers to cause a denial of service (CPU consumption or packet storm) via a spoofed, malformed packet to UDP port 1745.
How severe is CVE-2003-0110?
CVE-2003-0110 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2003-0110 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 18% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2003-0110?
CVE-2003-0110 primarily affects Microsoft Isa Server. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2003-0110?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2003-0110 published?
CVE-2003-0110 was published on 2003-05-05 and last updated on 2026-06-16.

References

Affected products (5)

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