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CVE-2009-4028

19
FAUCET Score

CVE-2009-4028 is a vulnerability in MySQL versions 5.0.x before 5.0.88 and 5.1.x before 5.1.41, when using OpenSSL. It allows man-in-the-middle attackers to spoof SSL-based MySQL servers through crafted X.509 certificates due to improper certificate depth validation. This vulnerability has a CVSS score of 6.8, indicating a medium severity with network-based attacks, medium complexity, and potential for partial confidentiality, integrity, and availability impact. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5.0.87CPE matchmatch criteria
cpe:2.3:a:mysql:mysql:*:*:*:*:*:*:*:*
5.0.0CPE matchmatch criteria
cpe:2.3:a:mysql:mysql:5.0.0:*:*:*:*:*:*:*
5.0.1CPE matchmatch criteria
cpe:2.3:a:mysql:mysql:5.0.1:*:*:*:*:*:*:*
5.0.2CPE matchmatch criteria
cpe:2.3:a:mysql:mysql:5.0.2:*:*:*:*:*:*:*
5.0.3CPE matchmatch criteria
cpe:2.3:a:mysql:mysql:5.0.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.77%
Probability of exploitation in next 30 days
EPSS Percentile
75.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0177 is in the 55th percentile among its peer group of 19,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: mysql-0:5.0.77-4.el5_4.2
View patch

Vendor Advisories (1)

redhatCVE-2009-4028Moderate

mysql: client SSL certificate verification flaw

Nov 4, 2009

References

bugs.mysql.com / 47320
dev.mysql.com / doc/refman/5.0/en/news-5-0-88.html
dev.mysql.com / doc/refman/5.1/en/news-5-1-41.html
lists.mysql.com / commits/87446
Exploit
lists.opensuse.org / opensuse-security-announce/2010-05/msg00001.html
marc.info
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10940
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8510
openwall.com / lists/oss-security/2009/11/19/3
openwall.com / lists/oss-security/2009/11/23/16
redhat.com / support/errata/RHSA-2010-0109.html
vupen.com / english/advisories/2010/1107
Vendor Advisory