CVE-2009-0265

Name: CVE-2009-0265
Creator: NVD / NIST
Published: 2009-01-26T15:30:04.89+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 2.47%

Last modified Jun 16, 2026

CVE-2009-0265 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Internet Systems Consortium (ISC) BIND 9.6.0 and earlier does not properly check the return value from the OpenSSL EVP_VerifyFinal function, which allows remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature, a similar vulnerability to CVE-2008-5077 and CVE-2009-0025.. EPSS estimates a 2.47% chance of exploitation in the next 30 days.

Description

Internet Systems Consortium (ISC) BIND 9.6.0 and earlier does not properly check the return value from the OpenSSL EVP_VerifyFinal function, which allows remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature, a similar vulnerability to CVE-2008-5077 and CVE-2009-0025.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

2.47%

82.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Isc	Bind	<= 9.6.0

References

http://groups.google.com/group/comp.protocols.dns.bind/browse_thread/thread/49ef622c8329fd33Mailing List
http://secunia.com/advisories/33559Broken Link, Vendor Advisory
http://slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.540362Mailing List, Patch
http://www.mandriva.com/security/advisories?name=MDVSA-2009:037Broken Link
http://www.vupen.com/english/advisories/2009/0043Broken Link
https://www.isc.org/node/373Broken Link, Vendor Advisory
http://groups.google.com/group/comp.protocols.dns.bind/browse_thread/thread/49ef622c8329fd33Mailing List
http://secunia.com/advisories/33559Broken Link, Vendor Advisory
http://slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.540362Mailing List, Patch
http://www.mandriva.com/security/advisories?name=MDVSA-2009:037Broken Link
http://www.vupen.com/english/advisories/2009/0043Broken Link
https://www.isc.org/node/373Broken Link, Vendor Advisory

Timeline

Published: Jan 26, 2009
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2009-0265?

How severe is CVE-2009-0265?

CVE-2009-0265 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.47% probability of exploitation in the next 30 days.

How do I fix CVE-2009-0265?

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-2009-0265?

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

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Source: NVD / NIST