CVE-2021-36780

Name: CVE-2021-36780
Creator: NVD / NIST
Published: 2021-12-17T09:15:07.047+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 0.45%

Last modified Jun 17, 2026

CVE-2021-36780 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. A Missing Authentication for Critical Function vulnerability in longhorn of SUSE Longhorn allows attackers to connect to a longhorn-engine replica instance granting it the ability to read and write data to and from a replica that they should not have access to. This issue affects: SUSE Longhorn longhorn versions prior to 1.1.3; longhorn versions prior to 1.2.3v.. EPSS estimates a 0.45% chance of exploitation in the next 30 days.

Description

A Missing Authentication for Critical Function vulnerability in longhorn of SUSE Longhorn allows attackers to connect to a longhorn-engine replica instance granting it the ability to read and write data to and from a replica that they should not have access to. This issue affects: SUSE Longhorn longhorn versions prior to 1.1.3; longhorn versions prior to 1.2.3v.

Metrics

CVSS 3.1

8.1/10

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

EPSS Probability

0.45%

35.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Linuxfoundation	Longhorn	< 1.1.3
Linuxfoundation	Longhorn	>= 1.2.0, < 1.2.3

References

https://bugzilla.suse.com/show_bug.cgi?id=1191819Issue Tracking, Vendor Advisory
https://github.com/longhorn/longhorn/security/advisories/GHSA-g358-m2wp-mhhxThird Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1191819Issue Tracking, Vendor Advisory
https://github.com/longhorn/longhorn/security/advisories/GHSA-g358-m2wp-mhhxThird Party Advisory

Timeline

Published: Dec 17, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-36780?

How severe is CVE-2021-36780?

CVE-2021-36780 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 0.45% probability of exploitation in the next 30 days.

How do I fix CVE-2021-36780?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-36780?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST