CVE-2025-62820 (GCVE-0-2025-62820)

Vulnerability from cvelistv5 – Published: 2025-10-23 00:00 – Updated: 2025-10-23 14:35
VLAI
Summary
Slack Nebula before 1.9.7 mishandles CIDR in some configurations and thus accepts arbitrary source IP addresses within the Nebula network.
Severity
4.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-23 13:22 UTC
CWE
  • CWE-420 - Unprotected Alternate Channel
Assigner
References
Impacted products
Vendor Product Version CPE status
Slack Nebula Affected: 0 , < 1.9.7 (semver)
    cpe:2.3:a:slack:nebula:*:*:*:*:*:*:*:*
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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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