Arbitrary library loading in IBM Db2 lets users read host files
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-284.
Summary
IBM Db2 11.5.0 through 11.5.9 and 12.1.0 through 12.1.5 for Linux, UNIX and Windows, including DB2 Connect Server, are affected. Improper access control in the CREATE WRAPPER command (CWE-284) allows arbitrary library loading. A remote authenticated attacker with low privileges can obtain sensitive information from the host filesystem.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.5 for Linux, UNIX and Windows (includes DB2 Connect Server) could allow a remote authenticated attacker to obtain sensitive information due to improper authorization when using the CREATE WRAPPER command.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| IBM | Db2 | 11.5.0 – 11.5.9; 12.1.0 – 12.1.5 | — | No fix listed | CNA |
- Db2 VendorIBM Affected 11.5.0 – 11.5.9; 12.1.0 – 12.1.5 Fixed in — No fix listed CNA
CPE names CNA · 16
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:ibm:db2:11.5.0:*:*:*:*:aix:*:* | 11.5.0 | — | IBM |
| cpe:2.3:a:ibm:db2:11.5.9:*:*:*:*:aix:*:* | 11.5.9 | — | IBM |
| cpe:2.3:a:ibm:db2:12.1.0:*:*:*:*:aix:*:* | 12.1.0 | — | IBM |
| cpe:2.3:a:ibm:db2:12.1.5:*:*:*:*:aix:*:* | 12.1.5 | — | IBM |
| cpe:2.3:a:ibm:db2:11.5.0:*:*:*:*:linux:*:* | 11.5.0 | — | IBM |
| cpe:2.3:a:ibm:db2:11.5.9:*:*:*:*:linux:*:* | 11.5.9 | — | IBM |
| cpe:2.3:a:ibm:db2:12.1.0:*:*:*:*:linux:*:* | 12.1.0 | — | IBM |
| cpe:2.3:a:ibm:db2:12.1.5:*:*:*:*:linux:*:* | 12.1.5 | — | IBM |
| cpe:2.3:a:ibm:db2:11.5.0:*:*:*:*:windows:*:* | 11.5.0 | — | IBM |
| cpe:2.3:a:ibm:db2:11.5.9:*:*:*:*:windows:*:* | 11.5.9 | — | IBM |
- cpe:2.3:a:ibm:db2:11.5.0:*:*:*:*:aix:*:* Versions 11.5.0 — ·IBM
- cpe:2.3:a:ibm:db2:11.5.9:*:*:*:*:aix:*:* Versions 11.5.9 — ·IBM
- cpe:2.3:a:ibm:db2:12.1.0:*:*:*:*:aix:*:* Versions 12.1.0 — ·IBM
- cpe:2.3:a:ibm:db2:12.1.5:*:*:*:*:aix:*:* Versions 12.1.5 — ·IBM
- cpe:2.3:a:ibm:db2:11.5.0:*:*:*:*:linux:*:* Versions 11.5.0 — ·IBM
- cpe:2.3:a:ibm:db2:11.5.9:*:*:*:*:linux:*:* Versions 11.5.9 — ·IBM
- cpe:2.3:a:ibm:db2:12.1.0:*:*:*:*:linux:*:* Versions 12.1.0 — ·IBM
- cpe:2.3:a:ibm:db2:12.1.5:*:*:*:*:linux:*:* Versions 12.1.5 — ·IBM
- cpe:2.3:a:ibm:db2:11.5.0:*:*:*:*:windows:*:* Versions 11.5.0 — ·IBM
- cpe:2.3:a:ibm:db2:11.5.9:*:*:*:*:windows:*:* Versions 11.5.9 — ·IBM
Show 6 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:ibm:db2:12.1.0:*:*:*:*:windows:*:* | 12.1.0 | — | IBM |
| cpe:2.3:a:ibm:db2:12.1.5:*:*:*:*:windows:*:* | 12.1.5 | — | IBM |
| cpe:2.3:a:ibm:db2:11.5.0:*:*:*:*:unix:*:* | 11.5.0 | — | IBM |
| cpe:2.3:a:ibm:db2:11.5.9:*:*:*:*:unix:*:* | 11.5.9 | — | IBM |
| cpe:2.3:a:ibm:db2:12.1.0:*:*:*:*:unix:*:* | 12.1.0 | — | IBM |
| cpe:2.3:a:ibm:db2:12.1.5:*:*:*:*:unix:*:* | 12.1.5 | — | IBM |
- cpe:2.3:a:ibm:db2:12.1.0:*:*:*:*:windows:*:* Versions 12.1.0 — ·IBM
- cpe:2.3:a:ibm:db2:12.1.5:*:*:*:*:windows:*:* Versions 12.1.5 — ·IBM
- cpe:2.3:a:ibm:db2:11.5.0:*:*:*:*:unix:*:* Versions 11.5.0 — ·IBM
- cpe:2.3:a:ibm:db2:11.5.9:*:*:*:*:unix:*:* Versions 11.5.9 — ·IBM
- cpe:2.3:a:ibm:db2:12.1.0:*:*:*:*:unix:*:* Versions 12.1.0 — ·IBM
- cpe:2.3:a:ibm:db2:12.1.5:*:*:*:*:unix:*:* Versions 12.1.5 — ·IBM
Remediation
No fixed version is listed for IBM Db2.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Timeline
- 2026-10-12 Threatist record created from CVE-2026-18166
- 2026-10-13 CISA SSVC decision points changed
- 2026-10-13 Priority changed: MEDIUM → LOW
- 2026-10-13 Alias added: GHSA-rh3c-985w-2g3c
References
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Sources
- CVE-2026-18166 · CVE Program
- CVE-2026-18166 · NVD
- FIRST EPSS
- GHSA-rh3c-985w-2g3c · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences