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VulnerabilityPublished

CVE-2026-16480: IBM Db2 · Client-Side Enforcement of Server-Side Security

Affects IBM Db2Source CVE Database V5

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Not known to be exploited · CVSS 4.3 Medium.

Data as of 10 Nov 2026, 23:24 UTC

CVSS 3.1 base score
4.3Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 27% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 12 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
IBMDb2Affected
  • >=11.5.0 <=11.5.9
  • >=12.1.0 <=12.1.5
Fixed in–

CPE configurations (4)

  • 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:*:*:*:*:*:*:*

AI-suggested

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.

Description

IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.5 is affected by an improper authorization vulnerability in the certain command, allowing a non-privileged user to bypass authority checks and modify database catalog data.

References

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