PatchSiren cyber security CVE debrief
CVE-2026-36501 OpenDaylight CVE debrief
CVE-2026-36501 is a HIGH severity vulnerability in Controller v12.0.5. An issue in the Externalizable.readExternal() component allows attackers to cause a Denial of Service (DoS) via a crafted input. The vulnerability has a CVSS score of 7.5 and was published on [cvePublishedAt](https://www.cve.org/CVERecord?id=CVE-2026-36501).
- Vendor
- OpenDaylight
- Product
- Controller
- CVSS
- HIGH 7.5
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-06-05
- Original CVE updated
- 2026-06-09
- Advisory published
- 2026-06-05
- Advisory updated
- 2026-06-09
Who should care
Users of Controller v12.0.5 should be aware of this vulnerability and take necessary actions to mitigate it.
Technical summary
The vulnerability is caused by an issue in the Externalizable.readExternal() component of Controller v12.0.5. This allows attackers to cause a Denial of Service (DoS) via a crafted input.
Defensive priority
HIGH
Recommended defensive actions
- Apply patches or updates provided by the vendor to fix the vulnerability.
- Restrict access to the affected component to prevent exploitation.
Evidence notes
The vendor of this product is currently listed as Unknown Vendor. Evidence suggests the product may be related to Opendaylight.
Official resources
CVE-2026-36501 was published on 2026-06-05T18:17:16.927Z and modified on 2026-06-09T16:16:41.160Z.