CVE-2009-2069

medium Microsoft
CVSS v3 Base Score
5.8
AV:N/AC:M/Au:N/C:P/I:P/A:N
EPSS Score
2.2%
Exploitation probability in 30 days
Top 16% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
M
Confidentiality
P
Integrity
P
Availability
None
Published: June 15, 2009 (6177 days ago)
Last Modified: April 23, 2026
Vendor: Microsoft
Source: NVD

Description

Microsoft Internet Explorer before 8 displays a cached certificate for a (1) 4xx or (2) 5xx CONNECT response page returned by a proxy server, which allows man-in-the-middle attackers to spoof an arbitrary https site by letting a browser obtain a valid certificate from this site during one request, and then sending the browser a crafted 502 response page upon a subsequent request.

CWE

CWE-287

Affected Products

microsoft iemicrosoft internet explorer

References

🔗 research.microsoft.com 🔗 research.microsoft.com 🔗 www.securityfocus.com 🔗 research.microsoft.com 🔗 research.microsoft.com