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CVE-2009-4030

15
FAUCET Score

CVE-2009-4030 is a local privilege bypass vulnerability affecting MySQL 5.1.x before 5.1.41, specifically related to MyISAM table creation with modified DATA DIRECTORY or INDEX DIRECTORY arguments. This flaw, an incomplete fix for earlier CVEs, allows local users to bypass privilege checks by manipulating symlinks. With a CVSS score of 4.4, it has a low attack complexity and requires local access, potentially leading to partial confidentiality, integrity, and availability impacts. There is no known active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
5.1.5CPE matchmatch criteria
cpe:2.3:a:mysql:mysql:5.1.5:*:*:*:*:*:*:*
5.1.23CPE matchmatch criteria
cpe:2.3:a:mysql:mysql:5.1.23:*:*:*:*:*:*:*
5.1.32CPE matchmatch criteria
cpe:2.3:a:mysql:mysql:5.1.32:*:*:*:*:*:*:*
5.1CPE matchmatch criteria
cpe:2.3:a:oracle:mysql:5.1:*:*:*:*:*:*:*
5.1.1CPE matchmatch criteria
cpe:2.3:a:oracle:mysql:5.1.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.4MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
3.4
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.43%
Probability of exploitation in next 30 days
EPSS Percentile
35.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0043 is in the 67th percentile among its peer group of 1,595 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 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 (2)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: mysql-0:4.1.22-2.el4_8.3
View patch
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-2009-4030Low

mysql: Incomplete fix for CVE-2008-2079 / CVE-2008-4098

Nov 4, 2009

References

bugs.mysql.com / bug.php
dev.mysql.com / doc/refman/5.1/en/news-5-1-41.html
lists.apple.com / archives/security-announce/2010//Mar/msg00001.html
lists.mysql.com / commits/89940
lists.opensuse.org / opensuse-security-announce/2010-05/msg00001.html
lists.opensuse.org / opensuse-security-announce/2010-11/msg00005.html
marc.info
marc.info
secunia.com / advisories/38517
secunia.com / advisories/38573
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11116
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8156
support.apple.com / kb/HT4077
ubuntu.com / usn/usn-897-1
debian.org / security/2010/dsa-1997
openwall.com / lists/oss-security/2009/11/19/3
openwall.com / lists/oss-security/2009/11/24/6
redhat.com / support/errata/RHSA-2010-0109.html
redhat.com / support/errata/RHSA-2010-0110.html
ubuntu.com / usn/USN-1397-1
vupen.com / english/advisories/2010/1107