What is the severity of CVE-2025-27829?

CVE-2025-27829 is classified as a critical vulnerability affecting Stormshield Network Security that can lead to denial of multicast routing service.

How do I fix CVE-2025-27829?

To resolve CVE-2025-27829, upgrade your Stormshield Network Security system to version 4.3.35 or later.

What versions of Stormshield Network Security are affected by CVE-2025-27829?

CVE-2025-27829 affects Stormshield Network Security versions prior to 4.3.35.

What type of attack does CVE-2025-27829 allow?

CVE-2025-27829 allows for the interruption of multicast traffic which can disable the multicast routing services on affected interfaces.

Is CVE-2025-27829 a remote vulnerability?

Yes, CVE-2025-27829 can potentially be exploited remotely if multicast streams are enabled across different interfaces.

Vulnerability/
CVE-2025-27829

1/4/2025

CVE-2025-27829

First published: Tue Apr 01 2025(Updated: )

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.

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
Stormshield Network Security (SNS)	<4.3.35

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Reference Links

https://advisories.stormshield.eu/2025-002/

Frequently Asked Questions

What is the severity of CVE-2025-27829?
CVE-2025-27829 is classified as a critical vulnerability affecting Stormshield Network Security that can lead to denial of multicast routing service.
How do I fix CVE-2025-27829?
To resolve CVE-2025-27829, upgrade your Stormshield Network Security system to version 4.3.35 or later.
What versions of Stormshield Network Security are affected by CVE-2025-27829?
CVE-2025-27829 affects Stormshield Network Security versions prior to 4.3.35.
What type of attack does CVE-2025-27829 allow?
CVE-2025-27829 allows for the interruption of multicast traffic which can disable the multicast routing services on affected interfaces.
Is CVE-2025-27829 a remote vulnerability?
Yes, CVE-2025-27829 can potentially be exploited remotely if multicast streams are enabled across different interfaces.

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source/MITRE
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agent/description
agent/guess-ai
agent/software-canonical-lookup
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collector/nvd-api
source/NVD
agent/event
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agent/author
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vendor/stormshield
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Frequently Asked Questions

What is the severity of CVE-2025-27829?
CVE-2025-27829 is classified as a critical vulnerability affecting Stormshield Network Security that can lead to denial of multicast routing service.
How do I fix CVE-2025-27829?
To resolve CVE-2025-27829, upgrade your Stormshield Network Security system to version 4.3.35 or later.
What versions of Stormshield Network Security are affected by CVE-2025-27829?
CVE-2025-27829 affects Stormshield Network Security versions prior to 4.3.35.
What type of attack does CVE-2025-27829 allow?
CVE-2025-27829 allows for the interruption of multicast traffic which can disable the multicast routing services on affected interfaces.
Is CVE-2025-27829 a remote vulnerability?
Yes, CVE-2025-27829 can potentially be exploited remotely if multicast streams are enabled across different interfaces.