CVE-2009-4028

Exp

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.

Published: 2009-11-30 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-4028 is rated High Exploit Risk (70.4/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.58%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2009-4028

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2009-4028

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-12-28 1.80% 1.58% -0.22%
2 2025-12-27 1.58% 1.80% +0.22%
3 2025-10-28 — 1.58% —

Full EPSS history (14 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-4028

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 6.4 [email protected]

Weakness enumeration for CVE-2009-4028

OS Trackers for CVE-2009-4028

vendor priority summary link
gentoo high CVE-2009-4028: 1 GLSA(s) (201201-02), 1 atom(s) (dev-db/mysql); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2009-4028
redhat medium — https://access.redhat.com/security/cve/CVE-2009-4028
suse medium CVE-2009-4028 severity moderate: SUSE including 185 source package names (liblz4-1-1.8.0-3.5.2, libmariadb-devel-3.1.22-2.35.1, …), 350 product×package rows across 49 product lines (SUSE CaaS Platform 4.0, SUSE Linux Enterprise Desktop 12, … (49 product lines)): Fixed 321, Known Not Affected 29. https://www.suse.com/security/cve/CVE-2009-4028/
ubuntu medium CVE-2009-4028 medium priority: Ubuntu including 4 source packages (mysql-dfsg, mysql-dfsg-4.1, mysql-dfsg-5.0, mysql-dfsg-5.1), 24 status rows across 6 suites (dapper, hardy, intrepid, jaunty, karmic, upstream): DNE 11, not-affected 7, needs-triage 4, ignored 2. https://ubuntu.com/security/CVE-2009-4028

Affected software / configurations for CVE-2009-4028

Vendor Product Version Raw CPE
mysql mysql <= 5.0.87 cpe:2.3:a:mysql:mysql:*:*:*:*:*:*:*:*
mysql mysql 5.0.0 cpe:2.3:a:mysql:mysql:5.0.0:*:*:*:*:*:*:*
mysql mysql 5.0.1 cpe:2.3:a:mysql:mysql:5.0.1:*:*:*:*:*:*:*
mysql mysql 5.0.2 cpe:2.3:a:mysql:mysql:5.0.2:*:*:*:*:*:*:*
mysql mysql 5.0.3 cpe:2.3:a:mysql:mysql:5.0.3:*:*:*:*:*:*:*
mysql mysql 5.0.4 cpe:2.3:a:mysql:mysql:5.0.4:*:*:*:*:*:*:*
mysql mysql 5.0.5 cpe:2.3:a:mysql:mysql:5.0.5:*:*:*:*:*:*:*
mysql mysql 5.0.5.0.21 cpe:2.3:a:mysql:mysql:5.0.5.0.21:*:*:*:*:*:*:*
mysql mysql 5.0.10 cpe:2.3:a:mysql:mysql:5.0.10:*:*:*:*:*:*:*
mysql mysql 5.0.15 cpe:2.3:a:mysql:mysql:5.0.15:*:*:*:*:*:*:*
mysql mysql 5.0.16 cpe:2.3:a:mysql:mysql:5.0.16:*:*:*:*:*:*:*
mysql mysql 5.0.17 cpe:2.3:a:mysql:mysql:5.0.17:*:*:*:*:*:*:*
mysql mysql 5.0.20 cpe:2.3:a:mysql:mysql:5.0.20:*:*:*:*:*:*:*
mysql mysql 5.0.22.1.0.1 cpe:2.3:a:mysql:mysql:5.0.22.1.0.1:*:*:*:*:*:*:*
mysql mysql 5.0.24 cpe:2.3:a:mysql:mysql:5.0.24:*:*:*:*:*:*:*
mysql mysql 5.0.30 cpe:2.3:a:mysql:mysql:5.0.30:*:*:*:*:*:*:*
mysql mysql 5.0.36 cpe:2.3:a:mysql:mysql:5.0.36:*:*:*:*:*:*:*
mysql mysql 5.0.44 cpe:2.3:a:mysql:mysql:5.0.44:*:*:*:*:*:*:*
mysql mysql 5.0.54 cpe:2.3:a:mysql:mysql:5.0.54:*:*:*:*:*:*:*
mysql mysql 5.0.56 cpe:2.3:a:mysql:mysql:5.0.56:*:*:*:*:*:*:*
mysql mysql 5.0.60 cpe:2.3:a:mysql:mysql:5.0.60:*:*:*:*:*:*:*
mysql mysql 5.0.66 cpe:2.3:a:mysql:mysql:5.0.66:*:*:*:*:*:*:*
mysql mysql 5.0.82 cpe:2.3:a:mysql:mysql:5.0.82:*:*:*:*:*:*:*
mysql mysql 5.0.84 cpe:2.3:a:mysql:mysql:5.0.84:*:*:*:*:*:*:*
mysql mysql 5.1.5 cpe:2.3:a:mysql:mysql:5.1.5:*:*:*:*:*:*:*
mysql mysql 5.1.23 cpe:2.3:a:mysql:mysql:5.1.23:*:*:*:*:*:*:*
mysql mysql 5.1.31 cpe:2.3:a:mysql:mysql:5.1.31:*:*:*:*:*:*:*
mysql mysql 5.1.32 cpe:2.3:a:mysql:mysql:5.1.32:*:*:*:*:*:*:*
mysql mysql 5.1.34 cpe:2.3:a:mysql:mysql:5.1.34:*:*:*:*:*:*:*
mysql mysql 5.1.37 cpe:2.3:a:mysql:mysql:5.1.37:*:*:*:*:*:*:*
oracle mysql 5.0.0 cpe:2.3:a:oracle:mysql:5.0.0:alpha:*:*:*:*:*:*
oracle mysql 5.0.3 cpe:2.3:a:oracle:mysql:5.0.3:beta:*:*:*:*:*:*
oracle mysql 5.0.6 cpe:2.3:a:oracle:mysql:5.0.6:*:*:*:*:*:*:*
oracle mysql 5.0.7 cpe:2.3:a:oracle:mysql:5.0.7:*:*:*:*:*:*:*
oracle mysql 5.0.8 cpe:2.3:a:oracle:mysql:5.0.8:*:*:*:*:*:*:*
oracle mysql 5.0.11 cpe:2.3:a:oracle:mysql:5.0.11:*:*:*:*:*:*:*
oracle mysql 5.0.12 cpe:2.3:a:oracle:mysql:5.0.12:*:*:*:*:*:*:*
oracle mysql 5.0.13 cpe:2.3:a:oracle:mysql:5.0.13:*:*:*:*:*:*:*
oracle mysql 5.0.14 cpe:2.3:a:oracle:mysql:5.0.14:*:*:*:*:*:*:*
oracle mysql 5.0.18 cpe:2.3:a:oracle:mysql:5.0.18:*:*:*:*:*:*:*
oracle mysql 5.0.19 cpe:2.3:a:oracle:mysql:5.0.19:*:*:*:*:*:*:*
oracle mysql 5.0.21 cpe:2.3:a:oracle:mysql:5.0.21:*:*:*:*:*:*:*
oracle mysql 5.0.22 cpe:2.3:a:oracle:mysql:5.0.22:*:*:*:*:*:*:*
oracle mysql 5.0.23 cpe:2.3:a:oracle:mysql:5.0.23:*:*:*:*:*:*:*
oracle mysql 5.0.25 cpe:2.3:a:oracle:mysql:5.0.25:*:*:*:*:*:*:*
oracle mysql 5.0.26 cpe:2.3:a:oracle:mysql:5.0.26:*:*:*:*:*:*:*
oracle mysql 5.0.27 cpe:2.3:a:oracle:mysql:5.0.27:*:*:*:*:*:*:*
oracle mysql 5.0.30 cpe:2.3:a:oracle:mysql:5.0.30:sp1:*:*:*:*:*:*
oracle mysql 5.0.32 cpe:2.3:a:oracle:mysql:5.0.32:*:*:*:*:*:*:*
oracle mysql 5.0.33 cpe:2.3:a:oracle:mysql:5.0.33:*:*:*:*:*:*:*
oracle mysql 5.0.37 cpe:2.3:a:oracle:mysql:5.0.37:*:*:*:*:*:*:*
oracle mysql 5.0.38 cpe:2.3:a:oracle:mysql:5.0.38:*:*:*:*:*:*:*
oracle mysql 5.0.41 cpe:2.3:a:oracle:mysql:5.0.41:*:*:*:*:*:*:*
oracle mysql 5.0.42 cpe:2.3:a:oracle:mysql:5.0.42:*:*:*:*:*:*:*
oracle mysql 5.0.45 cpe:2.3:a:oracle:mysql:5.0.45:*:*:*:*:*:*:*
oracle mysql 5.0.50 cpe:2.3:a:oracle:mysql:5.0.50:*:*:*:*:*:*:*
oracle mysql 5.0.51 cpe:2.3:a:oracle:mysql:5.0.51:*:*:*:*:*:*:*
oracle mysql 5.0.52 cpe:2.3:a:oracle:mysql:5.0.52:*:*:*:*:*:*:*
oracle mysql 5.0.75 cpe:2.3:a:oracle:mysql:5.0.75:*:*:*:*:*:*:*
oracle mysql 5.0.77 cpe:2.3:a:oracle:mysql:5.0.77:*:*:*:*:*:*:*
oracle mysql 5.0.81 cpe:2.3:a:oracle:mysql:5.0.81:*:*:*:*:*:*:*
oracle mysql 5.0.83 cpe:2.3:a:oracle:mysql:5.0.83:*:*:*:*:*:*:*
oracle mysql 5.0.85 cpe:2.3:a:oracle:mysql:5.0.85:*:*:*:*:*:*:*
oracle mysql 5.0.86 cpe:2.3:a:oracle:mysql:5.0.86:*:*:*:*:*:*:*
oracle mysql 5.1 cpe:2.3:a:oracle:mysql:5.1:*:*:*:*:*:*:*
oracle mysql 5.1.1 cpe:2.3:a:oracle:mysql:5.1.1:*:*:*:*:*:*:*
oracle mysql 5.1.2 cpe:2.3:a:oracle:mysql:5.1.2:*:*:*:*:*:*:*
oracle mysql 5.1.3 cpe:2.3:a:oracle:mysql:5.1.3:*:*:*:*:*:*:*
oracle mysql 5.1.4 cpe:2.3:a:oracle:mysql:5.1.4:*:*:*:*:*:*:*
oracle mysql 5.1.6 cpe:2.3:a:oracle:mysql:5.1.6:*:*:*:*:*:*:*
oracle mysql 5.1.7 cpe:2.3:a:oracle:mysql:5.1.7:*:*:*:*:*:*:*
oracle mysql 5.1.8 cpe:2.3:a:oracle:mysql:5.1.8:*:*:*:*:*:*:*
oracle mysql 5.1.9 cpe:2.3:a:oracle:mysql:5.1.9:*:*:*:*:*:*:*
oracle mysql 5.1.10 cpe:2.3:a:oracle:mysql:5.1.10:*:*:*:*:*:*:*
oracle mysql 5.1.11 cpe:2.3:a:oracle:mysql:5.1.11:*:*:*:*:*:*:*
oracle mysql 5.1.12 cpe:2.3:a:oracle:mysql:5.1.12:*:*:*:*:*:*:*
oracle mysql 5.1.13 cpe:2.3:a:oracle:mysql:5.1.13:*:*:*:*:*:*:*
oracle mysql 5.1.14 cpe:2.3:a:oracle:mysql:5.1.14:*:*:*:*:*:*:*
oracle mysql 5.1.15 cpe:2.3:a:oracle:mysql:5.1.15:*:*:*:*:*:*:*
oracle mysql 5.1.16 cpe:2.3:a:oracle:mysql:5.1.16:*:*:*:*:*:*:*

References for CVE-2009-4028

cvelogic Threat Intelligence