CVE-2009-4028

no score yetEPSS 1.8%

The vio_verify_callback function in viosslfactories.c in MySQL 5.0.x before 5.0.88 and 5.1.x before 5.1.41, when OpenSSL is used, accepts a value of zero for the depth of X.509 certificates, which allows man-in-the-middle attackers to spoof arbitrary SSL-based MySQL servers via a crafted certificate, as demonstrated by a certificate presented by a server linked against the yaSSL library.

EPSS: 1.8% chance of exploitation in the next 30 days; higher than 78% of CVEs (scores of 2026-10-31)
CWE: CWE-20
Published: 2009-11-30
Modified: 2026-06-16
Record from: the NVD, synced 2026-10-19

Affected

mysql:mysql
oracle:mysql

References

http://bugs.mysql.com/47320
http://dev.mysql.com/doc/refman/5.0/en/news-5-0-88.html
http://dev.mysql.com/doc/refman/5.1/en/news-5-1-41.html
http://lists.mysql.com/commits/87446
http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00001.html

Check your stack JSON