---
title: "CVE-2026-33367: SNMP - Authentication Bypass"
description: "SNMP contains an authentication bypass vulnerability caused by lack of authentication for administrative actions, letting attackers perform configuration retrieval, user modification, and firmware upgrades without authentication."
url: https://panop.io/threat-heartbeat/CVE-2026-33367/
---

# CVE-2026-33367 SNMP - Authentication Bypass

SNMP contains an authentication bypass vulnerability caused by lack of authentication for administrative actions, letting attackers perform configuration retrieval, user modification, and firmware upgrades without authentication.

CVSS base score 8.1 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.29% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-33367)

## Details

Type

Authentication Bypass

Impact

Privilege Escalation, Data Tampering

CVSS vector

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

Published

9 October 2026

Updated

15 October 2026

Weakness

[CWE-306](https://cwe.mitre.org/data/definitions/306.html)

## Vendor fix

Implement authentication mechanisms or update to versions with authentication enforced.

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-2026-33367](https://nvd.nist.gov/vuln/detail/CVE-2026-33367)
- [https://github.com/cisagov/CSAF/blob/develop/csaf\_files/OT/white/2026/icsa-26-281-01.json](https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-281-01.json)
- [https://www.cisa.gov/news-events/ics-advisories/icsa-26-281-01](https://www.cisa.gov/news-events/ics-advisories/icsa-26-281-01)
- [https://www.hms-networks.com/](https://www.hms-networks.com/)
- [https://www.hms-networks.com/cybersecurity](https://www.hms-networks.com/cybersecurity)

[← All CVEs](https://panop.io/threat-heartbeat/)

## 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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