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CVE-2025-27829

HIGH
7.3
CVSS Score
Published: April 1, 2025 at 12:00 AM UTC
Updated: June 17, 2026 at 09:04 AM UTC
1 product affected across 1 vendorNetwork Security

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Severity
HIGH7.3
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

An issue was discovered in Stormshield Network Security (SNS) 4.3.x before 4.3.35. If multicast streams are enabled on different interfaces, it may be possible to interrupt multicast traffic on some of these interfaces. That could result in a denial of the multicast routing service on the firewall.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Network Security· Stormshield
90%
4.3 ≤ v < 4.3.35

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: [email protected]
https://advisories.stormshield.eu/2025-002/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.3HIGHCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
LOW
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-400

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