CVE-2007-5276

Name: CVE-2007-5276
Creator: NVD / NIST
Published: 2007-10-08T23:17:00+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.39%

Last modified Jun 16, 2026

CVE-2007-5276 is a vulnerability of currently unknown severity. Opera 9 drops DNS pins based on failed connections to irrelevant TCP ports, which makes it easier for remote attackers to conduct DNS rebinding attacks, as demonstrated by a port 81 URL in an IMG SRC, when the DNS pin had been established for a session on port 80.. EPSS estimates a 1.39% chance of exploitation in the next 30 days.

Description

Opera 9 drops DNS pins based on failed connections to irrelevant TCP ports, which makes it easier for remote attackers to conduct DNS rebinding attacks, as demonstrated by a port 81 URL in an IMG SRC, when the DNS pin had been established for a session on port 80.

Metrics

EPSS Probability

1.39%

68.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Opera	Opera Browser	9.0

References

http://crypto.stanford.edu/dns/dns-rebinding.pdfTechnical Description, Third Party Advisory
http://osvdb.org/45526Broken Link
http://crypto.stanford.edu/dns/dns-rebinding.pdfTechnical Description, Third Party Advisory
http://osvdb.org/45526Broken Link

Timeline

Published: Oct 8, 2007
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2007-5276?

How severe is CVE-2007-5276?

Severity scoring for CVE-2007-5276 is pending analysis. The EPSS model estimates a 1.39% probability of exploitation in the next 30 days.

How do I fix CVE-2007-5276?

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-2007-5276?

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

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Source: NVD / NIST