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Servers and applications

CVE-2000-0970

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.

Severity
High 7.5
Published
19 Dec 2000
Last changed
23 Sept 2026
Added to UpHeron
21 Oct 2026
Exploit chance
46% in the next 30 daysHigher than 98% of CVEs. EPSS by FIRST, 12 Nov 2026
Attack
Over the network · No login needed
Attacker can
Read some data · Change some data · Slow it down
CVSS vector
AV:N/AC:L/Au:N/C:P/I:P/A:P
Sources
NVD

Affected software

SoftwareAffected versions
Microsoft IISServers and applications · cpe:a:microsoft:internet_information_services
  • Version 5.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2000-0970
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2000-0970