CVE-2003-0526

CVE-2003-0526 is a medium-severity vulnerability in Microsoft Isa Server with a CVSS 2.0 base score of 6.8. Its EPSS exploit-prediction score of 22% places it in the 97th percentile, indicating an elevated likelihood of exploitation.

Key facts

Description

Cross-site scripting (XSS) vulnerability in Microsoft Internet Security and Acceleration (ISA) Server 2000 allows remote attackers to inject arbitrary web script via a URL containing the script in the domain name portion, which is not properly cleansed in the default error pages (1) 500.htm for "500 Internal Server error" or (2) 404.htm for "404 Not Found."

Frequently asked questions

What is CVE-2003-0526?
Cross-site scripting (XSS) vulnerability in Microsoft Internet Security and Acceleration (ISA) Server 2000 allows remote attackers to inject arbitrary web script via a URL containing the script in the domain name portion, which is not properly cleansed in the default error pages (1) 500.htm for "500 Internal Server error" or (2) 404.htm for "404 Not Found."
How severe is CVE-2003-0526?
CVE-2003-0526 has a CVSS 2.0 base score of 6.8, rated medium severity.
Is CVE-2003-0526 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 22% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2003-0526?
CVE-2003-0526 primarily affects Microsoft Isa Server. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2003-0526?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2003-0526 published?
CVE-2003-0526 was published on 2003-08-18 and last updated on 2026-06-16.

References

Affected products (3)

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