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PatchSiren cyber security CVE debrief

CVE-2026-109839 IBM CVE debrief

IBM Db2 Genius Hub 1.0 is vulnerable to a missing cryptographic step, allowing a remote authenticated attacker to bypass security restrictions. The vulnerability has a CVSS score of 3.1 and a severity of LOW. This issue arises from a missing initialization vector in the cryptographic algorithm, which could potentially allow unauthorized access. Defenders should assess the exposure of their deployments and prioritize verifying the cryptographic algorithm implementation to mitigate potential security risks.

Vendor
IBM
Product
Db2 Genius Hub
CVSS
LOW 3.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-16
Original CVE updated
2026-10-16
Advisory published
2026-10-16
Advisory updated
2026-10-16

Who should care

Defenders responsible for IBM Db2 Genius Hub 1.0 deployments should assess exposure and prioritize verifying the cryptographic algorithm implementation.

Why it matters

Defenders should prioritize verifying the cryptographic algorithm implementation and assessing exposure in their environments to prevent potential security bypass and determine potential security risks.

  • Verify cryptographic algorithm implementation to prevent potential security bypass
  • Assess exposure in your environment to determine potential security risks

Technical summary

IBM Db2 Genius Hub 1.0 is vulnerable to a missing cryptographic step due to a missing initialization vector in the cryptographic algorithm. This allows a remote authenticated attacker to bypass security restrictions. The vulnerability has a CVSS score of 3.1 and a severity of LOW. To address this issue, defenders should verify the cryptographic algorithm implementation and assess exposure in their environments.

Defensive priority

Defenders should prioritize verifying the cryptographic algorithm implementation and assessing exposure in their environments.

Recommended defensive actions

  • Verify the cryptographic algorithm implementation in IBM Db2 Genius Hub 1.0
  • Assess exposure in your environment
  • Apply patch from IBM support page if available

Evidence notes

The CVE record and source item provide limited information about the vulnerability. The vendor, IBM, has provided a reference to a support page with patch information.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-109839 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-109839

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-109839 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-109839

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • IBM Db2 Genius Hub Missing Cryptographic Step

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/109xxx/CVE-2026-109839.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://www.ibm.com/support/pages/node/7292486

    Supplemental source - vendor-advisory, patch

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.