IBM Db2 denial of service
Priority LOW 30CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
IBM Db2 for Linux, UNIX and Windows (includes DB2 Connect Server) 11.5 under certain circumstances could allow an authenticated user to the database to cause a denial of service when a statement is run on columnar tables. IBM X-Force ID: 273393.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00774 55th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
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 for Linux, UNIX and Windows | 11.5 | — | No fix listed | CNA |
- Db2 for Linux, UNIX and Windows VendorIBM Affected 11.5 Fixed in — No fix listed CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:ibm:db2:*:*:*:*:*:*:*:* | before 11.5.9 | Vulnerable | IBM |
| cpe:2.3:o:ibm:aix:-:*:*:*:*:*:*:* | not specified by NVD | Running on | IBM |
| cpe:2.3:o:ibm:linux_on_ibm_z:-:*:*:*:*:*:*:* | not specified by NVD | Running on | IBM |
| cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Linux |
| cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
- cpe:2.3:a:ibm:db2:*:*:*:*:*:*:*:* Versions before 11.5.9 Vulnerable ·IBM
- cpe:2.3:o:ibm:aix:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
- cpe:2.3:o:ibm:linux_on_ibm_z:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
- cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Linux
- cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-50308
- 2026-10-03 Alias added: GHSA-884g-c37h-jg8g
References
More IBM Db2 vulnerabilities
- TI-2007-02494 Multiple buffer overflows in the DB2 JDBC Applet Server (DB2JDS) service in IBM DB2 9.x… CVSS 2.0HIGH 10.0
- TI-2010-03546 Stack-based buffer overflow in the validateUser implementation in the… CVSS 2.0HIGH 10.0
- TI-2026-08862 IBM® Db2® is vulnerable to remote code execution due to improper pre-auth DRDA handshake handling CVSS 3.1CRITICAL 9.8
- TI-2007-03566 IBM DB2 Universal Database (UDB) Administration Server (DAS) 8 before Fix Pack 16 and 9… CVSS 2.0HIGH 10.0
- TI-2008-06509 Buffer overflow in the DAS server in IBM DB2 8 before FP17, 9.1 before FP5, and 9.5… CVSS 2.0HIGH 10.0
- TI-2026-09068 IBM® Db2® is vulnerable to privilege escalation with a specially crafted query CVSS 3.1CRITICAL 9.8
Sources
- CVE-2023-50308 · CVE Program
- CVE-2023-50308 · NVD
- FIRST EPSS
- GHSA-884g-c37h-jg8g · 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