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Vulnerabilities

Vulnerability · CVE-2008-3963

MySQL 5.0 before 5.0.66, 5.1 before 5.1.26, and 6.0 before 6.0.6 does not properly handle a b'' (b single-quote single-quote) token, aka an empty bit-string literal, w…

Published Sep 11, 2008 · catalog updated Jun 16, 2026 · Oracle

Check if you run it

No confirmed exploitation is on record for CVE-2008-3963. EPSS is 6.46%. Act only if a listed version of Oracle is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium4.0
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
6.46%
Remediation
Advisory link
Affected products
cpe mysql/mysql

MySQL 5.0 before 5.0.66, 5.1 before 5.1.26, and 6.0 before 6.0.6 does not properly handle a b'' (b single-quote single-quote) token, aka an empty bit-string literal, which allows remote attackers to cause a denial of service (daemon crash) by using this token in a SQL statement.

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/mysql5.0.0
  • cpe mysql/mysql5.0.1
  • cpe mysql/mysql5.0.10
  • cpe mysql/mysql5.0.15
  • cpe mysql/mysql5.0.16
  • cpe mysql/mysql5.0.17
  • cpe mysql/mysql5.0.2
  • cpe mysql/mysql5.0.20
  • cpe mysql/mysql5.0.3
  • cpe mysql/mysql5.0.4
  • cpe mysql/mysql5.0.5
  • cpe mysql/mysql5.0.5.0.21

How to fix CVE-2008-3963

What to do

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

Should you patch?

No confirmed exploitation is on record for CVE-2008-3963. EPSS is 6.46%. Act only if a listed version of Oracle is installed.

Which versions are affected?

Compare what you have installed with 5.0.0, 5.0.1, 5.0.10, 5.0.15, 5.0.16, 5.0.17. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-134: Format String Vulnerability. EPSS 6.46%. There is no CISA KEV listing. A public exploit reference is linked in Sources. That is not the same as confirmed exploitation. 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. Sep 11, 2008 · Oracle Critical Patch Updates

    Detected

    MySQL 5.0 before 5.0.66, 5.1 before 5.1.26, and 6.0 before 6.0.6 does not properly handle a b'' (b single-quote single-quote) token, aka an empty bit-string literal, which allows remote attackers to cause a denial of service (daemon crash) by using this token in a SQL statement.

  2. Jun 16, 2026 · Oracle Critical Patch Updates

    Updated

    MySQL 5.0 before 5.0.66, 5.1 before 5.1.26, and 6.0 before 6.0.6 does not properly handle a b'' (b single-quote single-quote) token, aka an empty bit-string literal, which allows remote attackers to cause a denial of service (daemon crash) by using this token in a SQL statement.

Sources

  • CVE.orgVulnerability recordCVE-2008-3963

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2008-3963

    30-day exploitation probability 6.46%

    first.org
  • Exploit DatabasePublic exploit reference32348

    Public exploit archive reference. This is not confirmation of exploitation. The exploit body is not stored here.

    exploit-db.com
  • Oracle Critical Patch UpdatesVendor advisoryCVE-2008-3963

    MySQL 5.0 before 5.0.66, 5.1 before 5.1.26, and 6.0 before 6.0.6 does not properly handle a b'' (b single-quote single-quote) token, aka an empty bit-string literal, which allows remote attackers to cause a denial of service (daemon crash) by using this token in a SQL statement.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 23, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.