CVE-2003-0513: n/a vulnerability

CVE-2003-0513: Microsoft Internet Explorer allows remote attackers to bypass intended cookie access restrictions on a web...

Microsoft Internet Explorer allows remote attackers to bypass intended cookie access restrictions on a web application via "%2e%2e" (encoded dot dot) directory traversal sequences in a URL, which causes Internet Explorer to send the cookie outside the specified URL subsets, e.g. to a vulnerable application that runs on the same server as the target application.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 8, 2024, 01:58 UTC (UTC+00:00)

Security readout for executives and security teams

Internet Explorer could send cookies to a broader URL area than a website intended when a URL used encoded directory traversal. If separate applications share one server, a weaker application could receive cookies meant for another path. The sources do not provide CVSS, affected version ranges, or a named patch. Exposure is most plausible in legacy environments where Internet Explorer or affected HTTP user agents are still used with web applications sharing a host and relying on cookie Path scoping for separation. Treat this as a legacy-browser and application-isolation risk. Priority is highest where Internet Explorer remains in regulated or sensitive workflows and multiple applications share one hostname. Modern environments without legacy browser use are less likely to be exposed. Mitigation focus: Check Microsoft and Corsaire-era vendor guidance for affected browser versions and fixes.; Remove or isolate unsupported Internet Explorer usage from business workflows.; Do not rely on cookie Path alone as a security boundary between applications..

Prepared: Jun 30, 2026, 06:56 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Mar 16, 2004, 05:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0CVSS vectors

0Timeline events

0ADP providers

1Source links

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Source materials

CVE List V5 sourceCVE List V5

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

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No CWE listed

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