CVE-2003-0526

Exp

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."

Published: 2003-08-18 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2003-0526 is rated High Exploit Risk (71.3/100): CVSS Medium severity, with high exploitation likelihood (EPSS 22.47%, 97th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2003-0526

EDB-ID Source Kind Published Link
22919 exploit_db edb 2003-07-16 Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2003-0526

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 45.65% 22.47% -23.17%
2 2025-11-09 52.16% 45.65% -6.51%
3 2025-03-30 — 52.16% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2003-0526

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 6.4 [email protected]

Weakness enumeration for CVE-2003-0526

Affected software / configurations for CVE-2003-0526

Vendor Product Version Raw CPE
microsoft isa_server 2000 cpe:2.3:a:microsoft:isa_server:2000:*:*:*:*:*:*:*
microsoft isa_server 2000 cpe:2.3:a:microsoft:isa_server:2000:fp1:*:*:*:*:*:*
microsoft isa_server 2000 cpe:2.3:a:microsoft:isa_server:2000:sp1:*:*:*:*:*:*

References for CVE-2003-0526

cvelogic Threat Intelligence