CVE-2000-0970

Internet Information Server vulnerability

CVSS

7.5

EPSS

43.5%

EPSS pct

99th

Exploited

No known

IIS 4.0 and 5.0 .ASP pages send the same Session ID cookie for secure and insecure web sessions, which could allow remote attackers to hijack the secure web session of the user if that user moves to an insecure session, aka the "Session ID Cookie Marking" vulnerability.

Affected vendor

Microsoft

Affected product

Internet Information Server

CVSS vector

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

Published

2000-12-19

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, partial impact to availability.

Its EPSS score of 43.5% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it among the most exploited CVEs currently tracked.

Check your external exposure to CVE-2000-0970

Confirm whether Microsoft Internet Information Server is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2000-0970.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2000-0970

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2000-0970 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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