### Security Bulletin: NVIDIA Cumulus Linux and NVOS - August 2026

Updated 2026-08-18

NVIDIA has released security updates to address vulnerabilities in various products.

Go to [NVIDIA Product Security](https://www.nvidia.com/security/)

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### Details

This section provides a summary of potential vulnerabilities that this security update addresses and their impact. Descriptions use [CWE™](https://cwe.mitre.org/), and base scores and vectors use [CVSS v3.1](https://www.first.org/cvss/specification-document) standards.

| **CVE ID** | **Description** | **Vector** | **Base Score** | **Severity** | **CWE** | **Impacts** |
| ---------- | ---------------- | ---------- | -------------- | ------------ | -------- | ------------ |
| CVE-2026-24183 | NVIDIA Cumulus Linux contains a vulnerability in the user management component, where an unprivileged user could use improper privilege management on the system. A successful exploit of this vulnerability might lead to escalation of privileges. | [CVSS:3.1<br>/AV:L<br>/AC:L<br>/PR:L<br>/UI:N<br>/S:U<br>/C:H<br>/I:H<br>/A:H](https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) | 7.8 | HIGH | [CWE-250](https://cwe.mitre.org/data/definitions/250.html) | Escalation of privileges |
| CVE-2026-24184 | NVIDIA Cumulus Linux contains a vulnerability in the Link Layer Discovery Protocol (LLDP) daemon component, where an unauthenticated attacker on an adjacent network could cause buffer overflow by sending crafted LLDP frames. A successful exploit of this vulnerability might lead to code execution. | [CVSS:3.1<br>/AV:A<br>/AC:H<br>/PR:N<br>/UI:N<br>/S:U<br>/C:H<br>/I:H<br>/A:H](https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H) | 7.5 | HIGH | [CWE-120](https://cwe.mitre.org/data/definitions/120.html) | Code execution |
| CVE-2026-24185 | NVIDIA NVOS for network switches contains a vulnerability in the secure shell (SSH) server configuration component while PKA-only mode is enabled, where an administrator could inadvertently enable an alternative authentication path. If best practices for replacing the default password as recommended by NVIDIA are not followed, this alternative authentication path might lead to unauthorized access. A successful exploit of this vulnerability might lead to escalation of privileges. | [CVSS:3.1<br>/AV:A<br>/AC:H<br>/PR:L<br>/UI:N<br>/S:U<br>/C:H<br>/I:H<br>/A:H](https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H) | 7.1 | HIGH | [CWE-288](https://cwe.mitre.org/data/definitions/288.html) | Escalation of privileges |

The NVIDIA risk assessment is based on an average of risk across a diverse set of installed systems and might not represent the true risk to your local installation. NVIDIA recommends evaluating the risk to your specific configuration.

### Security Updates

To protect your system, download and install the latest NVIDIA components from the <a href="https://enterprise-support.nvidia.com/s/">NVIDIA Enterprise Support Portal</a>.<div>Custom versions of these products are also affected. If you are using a custom version, contact your account manager or CPM to get information about relevant patched versions to replace your custom version.</div>

The following table lists the software products and versions affected, and the updated version available from nvidia.com that includes this security update.

| **CVE Addressed** | **Affected Products** | **Platform or OS** | **Affected Versions** | **Updated Version** |
| --------------------- | --------------------- | ----------------- | --------------------- | ------------------- |
| CVE-2026-24185 | NVOS | GB300 | 0.0 to 25.0.2.4438 | 25.0.2.4438 |
| CVE-2026-24185 | NVOS | IBSwitch XDR | 0.0 to 25.0.2.6077 | 25.0.2.6077 |
| CVE-2026-24184 | Cumulus Linux GA | Cumulus Linux | 0.0 to 5.16 | 5.16 |
| CVE-2026-24184 | Cumulus Linux LTS | Cumulus Linux(5.11) | 0.0 to 5.11.5 | 5.11.5 |
| CVE-2026-24184 | Cumulus Linux LTS | Cumulus Linux(5.9) | 0.0 to 5.9.5 | 5.9.5 |
| CVE-2026-24183 | Cumulus Linux GA | Cumulus Linux | 5.15 | 5.16 |

### Notes

These issues were found internally.<div><br></div>



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### Revision History

| **Revision** | **Date** | **Description** |
| ------------ | -------- | --------------- |
| 1.0.0 | 2026-08-18 | Initial Release |

### Support
If you have any questions about this security bulletin, contact [NVIDIA Support](https://www.nvidia.com/object/support.html).

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