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Servers and applications

CVE-2009-0265

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.

Severity
High 7.5
Published
26 Jan 2009
Last changed
16 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
2.5% in the next 30 daysHigher than 84% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
CWE-252Improper certificate validation (CWE-295)
Attack
Over the network · No login needed · No user action needed
Attacker can
Read data
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Sources
NVD

Affected software

SoftwareAffected versions
BIND 9Servers and applications · cpe:a:isc:bind
  • Every version up to 9.6.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2009-0265
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2009-0265