CVE-2026-26456
High
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.
SeverityHigh
CVSS7.5
Exploit probability32. percentile0.4%
ProductCcoap
PublishedAug 27, 2026
First seenAug 27, 2026
Weakness typeCWE-362Race conditionCWE-476NULL pointer dereference
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| ccoap | 77f55c4b466e99327c24ace8a2913d3ba7e2ccd5 | — |
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