CVE-2009-2070

Name: CVE-2009-2070
Creator: NVD / NIST
Published: 2009-06-15T19:30:05.717+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.84%

Last modified Jun 16, 2026

CVE-2009-2070 is a vulnerability of currently unknown severity. Opera 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.. EPSS estimates a 0.84% chance of exploitation in the next 30 days.

Description

Opera 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.

Metrics

EPSS Probability

0.84%

53.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-287

Affected Software

Vendor	Product	Versions
Opera	Opera Browser	All versions

References

Timeline

Published: Jun 15, 2009
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2009-2070?

How severe is CVE-2009-2070?

Severity scoring for CVE-2009-2070 is pending analysis. The EPSS model estimates a 0.84% probability of exploitation in the next 30 days.

How do I fix CVE-2009-2070?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2009-2070?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST