CVE-2009-4028: mysql Improper Input Validation
Vulnerability summary
CVE-2009-4028 is a medium (CVSS 6.8) Improper Input Validation vulnerability in mysql. EPSS estimates a 1.77% chance of exploitation in the next 30 days, higher than 78% of scored vulnerabilities. 1 public exploit is recorded.
Not severe (CVSS 6.8, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 4 · Related 3Timeline
- 30-11-2009PublishedVulnerability first disclosed.
- 07-08-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
1 score · 1 source · 1 versionEPSS trend
Probability
1.77%
Chance of exploitation in the next 30 days
Percentile
78%
Versus all other CVEs
30-day change
No change 0.00 pp
From 1.77% on 04-10-2026
Known exploited
Compare KEV catalogsNot in the CISA KEV catalog.
Not in the ENISA CNW catalog.
Not in the CIRCL catalog.
Public exploits
1 foundExploit Reference (lists.mysql.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication (CVSS vector). Other conditions: not stated in public data.
Mysql1 product
- mysql≤ 5.0.87 | 5.0.0 | 5.0.1 | 5.0.2 | 5.0.3 | 5.0.4 | 5.0.5 | 5.0.5.0.21 | 5.0.10 | 5.0.15 | 5.0.16 | 5.0.17 | 5.0.20 | 5.0.22.1.0.1 | 5.0.24 | 5.0.30 | 5.0.36 | 5.0.44 | 5.0.54 | 5.0.56 | 5.0.60 | 5.0.66 | 5.0.82 | 5.0.84 | 5.1.5 | 5.1.23 | 5.1.31 | 5.1.32 | 5.1.34 | 5.1.37
Oracle1 product
- mysqlEOL5.0.0:alpha | 5.0.3:beta | 5.0.6 | 5.0.7 | 5.0.8 | 5.0.11 | 5.0.12 | 5.0.13 | 5.0.14 | 5.0.18 | 5.0.19 | 5.0.21 | 5.0.22 | 5.0.23 | 5.0.25 | 5.0.26 | 5.0.27 | 5.0.30:sp1 | 5.0.32 | 5.0.33 | 5.0.37 | 5.0.38 | 5.0.41 | 5.0.42 | 5.0.45 | 5.0.50 | 5.0.51 | 5.0.52 | 5.0.75 | 5.0.77 | 5.0.81 | 5.0.83 | 5.0.85 | 5.0.86 | 5.1 | 5.1.1 | 5.1.2 | 5.1.3 | 5.1.4 | 5.1.6 | 5.1.7 | 5.1.8 | 5.1.9 | 5.1.10 | 5.1.11 | 5.1.12 | 5.1.13 | 5.1.14 | 5.1.15 | 5.1.16 | 5.1.17 | 5.1.18 | 5.1.19 | 5.1.20 | 5.1.21 | 5.1.22 | 5.1.23:a | 5.1.24 | 5.1.25 | 5.1.26 | 5.1.27 | 5.1.28 | 5.1.29 | 5.1.30 | 5.1.31:sp1 | 5.1.33 | 5.1.34:sp1 | 5.1.35 | 5.1.36 | 5.1.37:sp1 | 5.1.38 | 5.1.39 | 5.1.40 | 5.1.40:sp1
2 vendors · 2 products
References
12 links- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8510VDB EntrySignatureX Refsource OVAL
- dev.mysql.com/doc/refman/5.1/en/news-5-1-41.htmlX Refsource CONFIRM
- dev.mysql.com/doc/refman/5.0/en/news-5-0-88.htmlX Refsource CONFIRM
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10940VDB EntrySignatureX Refsource OVAL
Show all 12 references
- bugs.mysql.com/47320X Refsource CONFIRM