CVE-2025-62820

MEDIUM EPSS 9.8%
Published Oct 23, 20258mo ago · Modified Jun 17, 20262w ago
4.9 CVSS 3.1
Medium
Find Similar
Published Oct 23, 2025 8mo ago
Last Modified Jun 17, 2026 2w ago

Description

Slack Nebula before 1.9.7 mishandles CIDR in some configurations and thus accepts arbitrary source IP addresses within the Nebula network.

CVSS Details

Base Score
4.9
Exploitability
1.8
Impact
2.7
Vector string
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:L
Attack Vector Network
Attack Complexity High
Privileges Required Low
User Interaction None
Scope Changed
Confidentiality None
Integrity Low
Availability Low

Threat Intelligence

EPSS Exploit Probability
9.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-420

References 2

  • github.com https://github.com/slackhq/nebula/pull/1493
  • github.com https://github.com/slackhq/nebula/pull/1494

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.