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CVE-2025-62820: Nebula 0 to before 1.9.7
CVE-2025-62820. CVSS 3.1 base score 4.9 (MEDIUM, Vendor/CNA). EPSS 0.0022 (percentile 0.11442), scored 2026-10-06.
Affected technology
Nebula · 0 to before 1.9.7
Slack
Description’s affected range: before 1.9.7 mishandles CIDR in some configurations and thus accepts arbitrary source IP addresses within the Nebula network
Component: Not specified by the source
Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · Low privileges required · No user interaction required
What an attacker can do
Vendor/CNA’s CVSS 3.1 assessment (base score 4.9/10) rates confidentiality impact as none; integrity and availability impact as low. The description does not specify what an attacker can achieve beyond these rated impacts.
- CWE
- CWE-420
- CCR priority
- 19.7 /100 (P5)
- CVSS 3.1
- 4.9 /10 · CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:L · Vendor/CNA
- EPSS
- 0.0022 · percentile 0.11486 · 2026-10-08
- KEV
- no
Provenance
- FIRST EPSS daily exploit-probability · Source record · observed 2026-10-08 17:36:22.845483+00:00 UTC
- NVD CVE API 2.0 · Source record · observed 2026-10-08 17:32:11.049884+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2025-62820.html