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Vulnerability record · CVE-2007-5277 · published 8 October 2007

CVE-2007-5277: Microsoft internet explorer vulnerability

Microsoft · Internet Explorer

Microsoft Internet Explorer 6 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, a different issue than CVE-2006-4560.

4.3 CVSS 2.0 Medium EPSS 9.7% · top 4.6%
4.3CVSS 2.0 base score
9.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
16 Jun 2026Last modified by NVD

Description

Microsoft Internet Explorer 6 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, a different issue than CVE-2006-4560.

AV:N/AC:M/Au:N/C:N/I:P/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://crypto.stanford.edu/dns/dns-rebinding.pdf Technical DescriptionThird Party Advisory
http://osvdb.org/45525 Broken Link
http://crypto.stanford.edu/dns/dns-rebinding.pdf Technical DescriptionThird Party Advisory
http://osvdb.org/45525 Broken Link

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2007-5277), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.