---
title: "CVE-2026-65198: Huawei openUBMC - Authentication Bypass"
description: "Huawei openUBMC contains a broken authentication caused by default SNMPv3 USM keys using the same value for authentication and privacy, letting attackers with the key authenticate and decrypt SNMPv3 traffic on any affected unit, exploit requires possession of the default key."
url: https://panop.io/threat-heartbeat/CVE-2026-65198/
---

# CVE-2026-65198 Huawei openUBMC - Authentication Bypass

Huawei openUBMC contains a broken authentication caused by default SNMPv3 USM keys using the same value for authentication and privacy, letting attackers with the key authenticate and decrypt SNMPv3 traffic on any affected unit, exploit requires possession of the default key.

CVSS base score 8.6 /10

High

CISA KEV

Not listed

Public exploit

None known

EPSS

0.19% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-65198)

## Details

Type

Authentication Bypass

Impact

Privilege Escalation

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L

Published

13 October 2026

Updated

15 October 2026

Weakness

[CWE-321](https://cwe.mitre.org/data/definitions/321.html)

## Vendor fix

Change default SNMPv3 USM keys to unique per-unit values and rotate keys upon provisioning.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-65198](https://nvd.nist.gov/vuln/detail/CVE-2026-65198)
- [https://www.runzero.com/advisories/huawei-default-snmpv3-usm-key-cve-2026-65198](https://www.runzero.com/advisories/huawei-default-snmpv3-usm-key-cve-2026-65198)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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