CVE-2026-17273: CWE-476 NULL Pointer Dereference
Description
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to cause a denial of service due to a NULL pointer dereference.
CVSS v3.1
Score 6.5medium
Affected software
IBM
cpe:2.3:a:ibm:i:7.6:*:*:*:*:*:*:*cpe:2.3:a:ibm:i:7.6.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:i:7.5:*:*:*:*:*:*:*cpe:2.3:a:ibm:i:7.5.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:i:7.4:*:*:*:*:*:*:*cpe:2.3:a:ibm:i:7.4.0:*:*:*:*:*:*:*Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, identified as CWE-476 (NULL Pointer Dereference), affects IBM i operating system versions 7.3 through 7.6. An authenticated remote attacker can exploit this flaw to cause a denial of service condition by causing the system to dereference a NULL pointer, leading to a crash or service interruption. The CVSS v3.1 base score is 6.5, reflecting a medium severity with network attack vector, low attack complexity, and no user interaction required. The vulnerability impacts availability only, with no confidentiality or integrity impact reported.
Potential Impact
Successful exploitation results in denial of service, causing system or service unavailability. There is no impact on data confidentiality or integrity. The attacker must be authenticated to exploit this vulnerability.
Mitigation Recommendations
No vendor advisory or patch information is provided in the input data. Patch status is not yet confirmed — check the IBM vendor advisory for current remediation guidance. Until a patch is available, restrict access to trusted authenticated users and monitor for unusual system crashes or service interruptions related to this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-07-24T23:28:44.572Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a9af761acd9273b49e77897
Added to database: 09/04/2026, 16:52:49 UTC
Last enriched: 09/14/2026, 23:51:48 UTC
Last updated: 10/18/2026, 06:48:15 UTC
Views: 84
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