CVE-2026-16480: CWE-602 Client-Side Enforcement of Server-Side Security in IBM Db2
IBM Db2 versions 11.5.0 through 11.5.9 and 12.1.0 through 12.1.5 contain an improper authorization vulnerability. This flaw allows a non-privileged user to bypass authority checks and modify database catalog data via a certain command. The vulnerability is identified as CWE-602, indicating client-side enforcement of server-side security. The CVSS score is 4.3, reflecting a medium severity level. No official patch or remediation guidance is currently provided by the vendor. There are no known exploits in the wild at this time.
AI Analysis
Technical Summary
CVE-2026-16480 affects IBM Db2 database versions 11.5.0 through 11.5.9 and 12.1.0 through 12.1.5. The vulnerability involves improper authorization where a non-privileged user can bypass authority checks on a specific command, enabling modification of database catalog data. This is categorized under CWE-602, which relates to client-side enforcement of server-side security policies, leading to potential unauthorized actions. The CVSS v3.1 base score is 4.3, indicating a medium impact primarily on confidentiality with no impact on integrity or availability. The vendor has not provided a remediation level or patch information as of the publication date.
Potential Impact
A non-privileged user can bypass authorization controls and modify database catalog data, potentially exposing sensitive information or altering database metadata. The impact is limited to confidentiality with no direct integrity or availability impact reported. There are no known active exploits targeting this vulnerability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the affected Db2 versions to trusted users only and monitor for unusual activity related to database catalog modifications.
CVE-2026-16480: CWE-602 Client-Side Enforcement of Server-Side Security in IBM Db2
Description
IBM Db2 versions 11.5.0 through 11.5.9 and 12.1.0 through 12.1.5 contain an improper authorization vulnerability. This flaw allows a non-privileged user to bypass authority checks and modify database catalog data via a certain command. The vulnerability is identified as CWE-602, indicating client-side enforcement of server-side security. The CVSS score is 4.3, reflecting a medium severity level. No official patch or remediation guidance is currently provided by the vendor. There are no known exploits in the wild at this time.
CVSS v3.1
Score 4.3medium
Affected software
cpe:2.3:a:ibm:db2:11.5.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:db2:11.5.9:*:*:*:*:*:*:*cpe:2.3:a:ibm:db2:12.1.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:db2:12.1.5:*:*:*:*:*:*:*Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-16480 affects IBM Db2 database versions 11.5.0 through 11.5.9 and 12.1.0 through 12.1.5. The vulnerability involves improper authorization where a non-privileged user can bypass authority checks on a specific command, enabling modification of database catalog data. This is categorized under CWE-602, which relates to client-side enforcement of server-side security policies, leading to potential unauthorized actions. The CVSS v3.1 base score is 4.3, indicating a medium impact primarily on confidentiality with no impact on integrity or availability. The vendor has not provided a remediation level or patch information as of the publication date.
Potential Impact
A non-privileged user can bypass authorization controls and modify database catalog data, potentially exposing sensitive information or altering database metadata. The impact is limited to confidentiality with no direct integrity or availability impact reported. There are no known active exploits targeting this vulnerability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the affected Db2 versions to trusted users only and monitor for unusual activity related to database catalog modifications.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-07-21T14:34:45.978Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a7ce1b0bf8831d5392aed31
Added to database: 08/12/2026, 21:12:16 UTC
Last enriched: 08/12/2026, 21:28:47 UTC
Last updated: 08/13/2026, 00:20:18 UTC
Views: 5
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