CVE-2021-22366

Name: CVE-2021-22366
Creator: NVD / NIST
Published: 2021-06-22T18:15:08.04+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.16%

Last modified Jun 17, 2026

CVE-2021-22366 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. There is an out-of-bounds read vulnerability in eSE620X vESS V100R001C10SPC200, V100R001C20SPC200, V200R001C00SPC300. The vulnerability is due to a function that handles an internal message contains an out-of-bounds read vulnerability. EPSS estimates a 0.16% chance of exploitation in the next 30 days.

Description

There is an out-of-bounds read vulnerability in eSE620X vESS V100R001C10SPC200, V100R001C20SPC200, V200R001C00SPC300. The vulnerability is due to a function that handles an internal message contains an out-of-bounds read vulnerability. An attacker could crafted messages between system process, successful exploit could cause Denial of Service (DoS).

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

0.16%

5.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-125

Affected Software

Vendor	Product	Versions
Huawei	Ese620x Vess Firmware	v100r001c10spc200
Huawei	Ese620x Vess Firmware	v100r001c20spc200
Huawei	Ese620x Vess Firmware	v200r001c00spc300

References

https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20210526-03-dos-enVendor Advisory
https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20210526-03-dos-enVendor Advisory

Timeline

Published: Jun 22, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-22366?

How severe is CVE-2021-22366?

CVE-2021-22366 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.16% probability of exploitation in the next 30 days.

How do I fix CVE-2021-22366?

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-2021-22366?

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

Scan your code now

Source: NVD / NIST