An issue in open62541 v.1.5.5 and before allows a remote attacker to cause a denial of service via the UA_Client_getRemoteDataTypes component (CVE-2026-67861)
Description
A denial of service vulnerability exists in open62541 version 1.5.5 and earlier, exploitable via the UA_Client_getRemoteDataTypes component. This allows a remote attacker to cause service disruption without requiring authentication or user interaction.
CVSS v3.1
Score 7.5high
Affected software
pkg:deb/ubuntu/open62541?arch=source&distro=stonkingpkg:deb/ubuntu/open62541?arch=source&distro=resoluteRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in open62541 versions up to 1.5.5 involves the UA_Client_getRemoteDataTypes component, which can be triggered remotely to cause a denial of service condition. The flaw does not impact confidentiality or integrity but results in availability loss. The CVSS 3.1 score is 7.5 (medium severity), reflecting network attack vector, low complexity, no privileges required, no user interaction, and impact limited to availability.
Potential Impact
Exploitation leads to denial of service, causing the affected open62541 client to become unavailable or unresponsive. There is no impact on data confidentiality or integrity.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider restricting network access to the UA_Client_getRemoteDataTypes component or applying other network-level mitigations to limit exposure.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- UBUNTU-CVE-2026-67861
- Osv Schema Version
- 1.7.0
- Ecosystems
- ["Ubuntu:26.10","Ubuntu:26.04:LTS"]
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ad3f5a32cdf04f6566627bc
Added to database: 10/17/2026, 22:24:35 UTC
Last enriched: 10/17/2026, 23:53:37 UTC
Last updated: 10/17/2026, 23:53:37 UTC
Views: 3
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