kbrain

CVE-2009-2069

MEDIUM · CVSS 5.8EPSS 2.2%EU EUVD

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.

Key facts

CVSS score
5.8 (v2.0)
Severity
MEDIUM
CVSS vector
AV:N/AC:M/Au:N/C:P/I:P/A:N
Weakness (CWE)
CWE-287
EPSS score
2.2% (83th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2009-2065)
Published
June 15, 2009
NVD last modified
June 16, 2026
Status
Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2009-2065 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

  • microsoft / ie
  • microsoft / ie
  • microsoft / ie
  • microsoft / ie
  • microsoft / ie
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer
  • microsoft / internet explorer

and 44 more…

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

Query CVEs from your AI assistant

The CVE/NVD Explorer brain answers CVE questions directly inside Claude, ChatGPT, or any MCP assistant — always up to date, no setup. Add it once and stop pasting advisories into chat.

Add the CVE brain