CVE-2026-7771: CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop') in IBM Db2
IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.4 is vulnerable to a trap when compiling a specially crafted statements containing subqueries could lead to a denial of service.
AI Analysis
Technical Summary
CVE-2026-7771 affects IBM Db2 database versions 11.5.0 through 11.5.9 and 12.1.0 through 12.1.4. The vulnerability arises from a loop with an unreachable exit condition (CWE-835) triggered when compiling specially crafted SQL statements containing subqueries. This can cause the database engine to enter an infinite loop, resulting in a denial of service condition. The vulnerability does not impact confidentiality or integrity but affects availability.
Potential Impact
Successful exploitation leads to denial of service by causing the Db2 database engine to hang or become unresponsive due to an infinite loop during statement compilation. There is no impact on data confidentiality or integrity. No known exploits are reported in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround has been documented. Users should monitor IBM security advisories for updates and avoid executing untrusted or specially crafted subquery statements until a patch is available.
CVE-2026-7771: CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop') in IBM Db2
Description
IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.4 is vulnerable to a trap when compiling a specially crafted statements containing subqueries could lead to a denial of service.
CVSS v3.1
Score 5.5medium
Affected software
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:db2:12.1.4:*:*:*:*:*:*:*Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-7771 affects IBM Db2 database versions 11.5.0 through 11.5.9 and 12.1.0 through 12.1.4. The vulnerability arises from a loop with an unreachable exit condition (CWE-835) triggered when compiling specially crafted SQL statements containing subqueries. This can cause the database engine to enter an infinite loop, resulting in a denial of service condition. The vulnerability does not impact confidentiality or integrity but affects availability.
Potential Impact
Successful exploitation leads to denial of service by causing the Db2 database engine to hang or become unresponsive due to an infinite loop during statement compilation. There is no impact on data confidentiality or integrity. No known exploits are reported in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround has been documented. Users should monitor IBM security advisories for updates and avoid executing untrusted or specially crafted subquery statements until a patch is available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-05-04T14:17:26.954Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a5b5eb12d1edb114c7fb411
Added to database: 07/18/2026, 11:08:33 UTC
Last enriched: 07/25/2026, 22:42:30 UTC
Last updated: 08/31/2026, 10:52:11 UTC
Views: 69
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.