CVE-2025-62820

Published Oct 23, 2025 CVSS 3.1 · 4.9 Medium EPSS < 1% KEV · Not listed
Description
Slack Nebula before 1.9.7 mishandles CIDR in some configurations and thus accepts arbitrary source IP addresses within the Nebula network.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-x6fh-7qmf-69xh Slack Nebula may accept arbitrary source IP addresses
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Slack
Slack nebula
Vendors & Products Slack
Slack nebula
Type Values Removed Values Added
Description Slack Nebula before 1.9.7 mishandles CIDR in some configurations and thus accepts arbitrary source IP addresses within the Nebula network.
Weaknesses CWE-420
References
Metrics cvssV3_1

{'score': 4.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Oct 23, 2025, 2:35 PM
Reserved
Oct 23, 2025, 12:00 AM
Status
Deferred
Published
Oct 23, 2025, 4:18 AM
Modified
Oct 8, 2026, 11:10 AM