CVE-2026-10534: CWE-121 Stack-based Buffer Overflow in IBM Db2
IBM Db2 versions 11.5.0 through 11.5.9 and 12.1.0 through 12.1.5 contain a stack-based buffer overflow vulnerability in the IXF IMPORT parser. This vulnerability is identified as CWE-121 and has a high severity with a CVSS score of 8.4. No official patch or remediation guidance has been provided yet. There are no known exploits in the wild at this time.
AI Analysis
Technical Summary
CVE-2026-10534 is a stack-based buffer overflow vulnerability in IBM Db2 affecting the IXF IMPORT parser. Specifically, versions 11.5.0 through 11.5.9 and 12.1.0 through 12.1.5 are vulnerable. The vulnerability allows an attacker with local access to potentially execute arbitrary code or cause denial of service due to the buffer overflow. The CVSS 3.1 base score is 8.4, indicating high impact on confidentiality, integrity, and availability. No vendor advisory or patch information is currently available, and no known exploits have been reported.
Potential Impact
Successful exploitation of this vulnerability could lead to complete compromise of the affected Db2 instance, including arbitrary code execution and denial of service. The vulnerability affects confidentiality, integrity, and availability with high impact. However, exploitation requires local access and no user interaction is needed.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a patch is available, restrict access to the affected Db2 versions to trusted users only and monitor for unusual activity related to IXF IMPORT operations.
CVE-2026-10534: CWE-121 Stack-based Buffer Overflow in IBM Db2
Description
IBM Db2 versions 11.5.0 through 11.5.9 and 12.1.0 through 12.1.5 contain a stack-based buffer overflow vulnerability in the IXF IMPORT parser. This vulnerability is identified as CWE-121 and has a high severity with a CVSS score of 8.4. No official patch or remediation guidance has been provided yet. There are no known exploits in the wild at this time.
CVSS v3.1
Score 8.4high
Affected software
pkg:maven/com.ibm/db2cpe: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:*:*:*:*:*:*:*Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-10534 is a stack-based buffer overflow vulnerability in IBM Db2 affecting the IXF IMPORT parser. Specifically, versions 11.5.0 through 11.5.9 and 12.1.0 through 12.1.5 are vulnerable. The vulnerability allows an attacker with local access to potentially execute arbitrary code or cause denial of service due to the buffer overflow. The CVSS 3.1 base score is 8.4, indicating high impact on confidentiality, integrity, and availability. No vendor advisory or patch information is currently available, and no known exploits have been reported.
Potential Impact
Successful exploitation of this vulnerability could lead to complete compromise of the affected Db2 instance, including arbitrary code execution and denial of service. The vulnerability affects confidentiality, integrity, and availability with high impact. However, exploitation requires local access and no user interaction is needed.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a patch is available, restrict access to the affected Db2 versions to trusted users only and monitor for unusual activity related to IXF IMPORT operations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-06-01T11:37:47.417Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a7ce89cbf8831d5393450df
Added to database: 08/12/2026, 21:41:48 UTC
Last enriched: 08/12/2026, 21:56:32 UTC
Last updated: 08/12/2026, 22:01:07 UTC
Views: 3
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