CVE-2005-2678: n/a vulnerability

CVE-2005-2678: Microsoft IIS 5.1 and 6 allows remote attackers to spoof the SERVER_NAME variable to bypass security checks...

Microsoft IIS 5.1 and 6 allows remote attackers to spoof the SERVER_NAME variable to bypass security checks and conduct various attacks via a GET request with an http://localhost URI, which makes it appear as if the request is coming from localhost.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 7, 2024, 22:45 UTC (UTC+00:00)

Security readout for executives and security teams

This old IIS issue could let a remote requester make an application believe a request was for localhost. If an application used that server name value to bypass checks, an outside user might gain unintended access or behavior. The sources do not provide CVSS, confirmed exploitation, or a vendor patch. Exposure is most likely in legacy Microsoft IIS 5.1 or IIS 6 deployments, especially applications that make authorization, routing, or trust decisions based on SERVER_NAME or localhost checks. Treat as a legacy exposure review item. It becomes urgent if IIS 5.1 or 6 remains internet-facing or protects sensitive workflows using hostname-based trust. Otherwise, prioritize discovery and retirement planning. Mitigation focus: Inventory any Microsoft IIS 5.1 or IIS 6 systems still reachable.; Review vendor and historical advisory guidance for applicable fixes or retirement paths.; Remove security decisions that trust SERVER_NAME or localhost naming alone..

Prepared: Jun 29, 2026, 18:15 UTC (UTC+00:00)

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

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Aug 23, 2005, 04:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0CVSS vectors

0Timeline events

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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

CWE details

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