CVE-2026-26456

Published Aug 27, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
A null pointer dereference vulnerability exists in the server-side session management logic of ccoap 77f55c4b466e99327c24ace8a2913d3ba7e2ccd5. The issue is caused by a race condition between the request dispatch thread and the session cleanup thread when accessing shared session list nodes without proper synchronization.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

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History
Type Values Removed Values Added
Title Null Pointer Dereference in ccoap Session Management
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Null Pointer Dereference in ccoap Session Management
Weaknesses CWE-362
CWE-476
Type Values Removed Values Added
Description A null pointer dereference vulnerability exists in the server-side session management logic of ccoap 77f55c4b466e99327c24ace8a2913d3ba7e2ccd5. The issue is caused by a race condition between the request dispatch thread and the session cleanup thread when accessing shared session list nodes without proper synchronization.
References

Subscriptions

No data.

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Aug 31, 2026, 5:35 PM
Reserved
Feb 16, 2026, 12:00 AM
Status
Deferred
Published
Aug 27, 2026, 5:17 PM
Modified
Sep 8, 2026, 7:42 PM