CVE-2005-1664

Asp.Net vulnerability

CVSS

6.4

EPSS

18.8%

EPSS pct

97th

Exploited

No known

The __VIEWSTATE functionality in Microsoft ASP.NET 1.x allows remote attackers to conduct replay attacks to (1) apply a ViewState generated from one view to a different view, (2) reuse ViewState information after the application's state has changed, or (3) use the ViewState to conduct attacks or expose content to third parties.

Affected vendor

Microsoft

Affected product

Asp.Net

CVSS vector

AV:N/AC:L/Au:N/C:P/I:P/A:N

Published

2005-05-18

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to partial impact to confidentiality, partial impact to integrity.

Its EPSS score of 18.8% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 97% of all scored CVEs.

Check your external exposure to CVE-2005-1664

Confirm whether Microsoft Asp.Net is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2005-1664.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2005-1664

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2005-1664 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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