CVE-2026-1301
6.8
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Summary
In builds with PubSub and JSON enabled, a crafted JSON message can cause the decoder to write beyond a heap-allocated array before authentication, reliably crashing the process and corrupting memory.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| o6 Automation GmbH | Open62541 | 1.5-rc1 < 1.5-rc2 | affected |
Weaknesses
- CWE-787: CWE-787 Out-of-bounds Write
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
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