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Vulnerabilities

Vulnerability · CVE-2006-1516

The check_connection function in sql_parse.cc in MySQL 4.0.x up to 4.0.26, 4.1.x up to 4.1.18, and 5.0.x up to 5.0.20 allows remote attackers to read portions of memor…

Published May 5, 2006 · catalog updated Jun 16, 2026 · Oracle

Check this week

CVE-2006-1516 is not in CISA KEV. FIRST estimates a 35.78% chance of exploitation in the next 30 days. Check whether you run Oracle.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.0
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
35.78%
Remediation
Advisory link
Affected products
cpe mysql/mysql

The check_connection function in sql_parse.cc in MySQL 4.0.x up to 4.0.26, 4.1.x up to 4.1.18, and 5.0.x up to 5.0.20 allows remote attackers to read portions of memory via a username without a trailing null byte, which causes a buffer over-read.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe mysql/mysql4.1.0
  • cpe mysql/mysql4.1.10
  • cpe mysql/mysql4.1.12
  • cpe mysql/mysql4.1.13
  • cpe mysql/mysql4.1.14
  • cpe mysql/mysql4.1.15
  • cpe mysql/mysql4.1.3
  • cpe mysql/mysql4.1.8
  • cpe mysql/mysql5.0.1
  • cpe mysql/mysql5.0.2
  • cpe mysql/mysql5.0.3
  • cpe mysql/mysql5.0.4

How to fix CVE-2006-1516

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2006-1516 is not in CISA KEV. FIRST estimates a 35.78% chance of exploitation in the next 30 days. Check whether you run Oracle.

Which versions are affected?

Compare what you have installed with 4.1.0, 4.1.10, 4.1.12, 4.1.13, 4.1.14, 4.1.15. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 35.78%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. May 5, 2006 · Oracle Critical Patch Updates

    Detected

    The check_connection function in sql_parse.cc in MySQL 4.0.x up to 4.0.26, 4.1.x up to 4.1.18, and 5.0.x up to 5.0.20 allows remote attackers to read portions of memory via a username without a trailing null byte, which causes a buffer over-read.

  2. Jun 16, 2026 · Oracle Critical Patch Updates

    Updated

    The check_connection function in sql_parse.cc in MySQL 4.0.x up to 4.0.26, 4.1.x up to 4.1.18, and 5.0.x up to 5.0.20 allows remote attackers to read portions of memory via a username without a trailing null byte, which causes a buffer over-read.

Sources

  • CVE.orgVulnerability recordCVE-2006-1516

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2006-1516

    30-day exploitation probability 35.8%

    first.org
  • Oracle Critical Patch UpdatesVendor advisoryCVE-2006-1516

    The check_connection function in sql_parse.cc in MySQL 4.0.x up to 4.0.26, 4.1.x up to 4.1.18, and 5.0.x up to 5.0.20 allows remote attackers to read portions of memory via a username without a trailing null byte, which causes a buffer over-read.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.