CVE-2026-26456: n/a
Description
CVE-2026-26456 is a high-severity vulnerability involving a null pointer dereference in the server-side session management of ccoap. It arises from a race condition between the request dispatch thread and the session cleanup thread when accessing shared session list nodes without proper synchronization. This flaw can cause a denial of service by crashing the affected server process.
CVSS v3.1
Score 7.5high
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in ccoap's session management logic is due to improper synchronization between concurrent threads accessing shared session list nodes. Specifically, a race condition between the request dispatch thread and the session cleanup thread can lead to a null pointer dereference, causing the server to crash. The issue is categorized under CWE-362 (Race Condition) and CWE-476 (Null Pointer Dereference). No patch or official remediation guidance is currently available, and no known exploits are reported in the wild.
Potential Impact
The vulnerability can cause a denial of service (DoS) by crashing the server process due to a null pointer dereference triggered by a race condition in session management. There is no indication of confidentiality or integrity impact.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider minimizing concurrent session cleanup and request dispatch operations or applying any vendor-recommended workarounds once published.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-02-16T00:00:00.000Z
- State
- PUBLISHED
Threat ID: 6a906ba6acd9273b498399eb
Added to database: 08/27/2026, 16:53:58 UTC
Last enriched: 09/07/2026, 15:33:49 UTC
Last updated: 10/09/2026, 18:48:18 UTC
Views: 24
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