CVE-2021-22357

Name: CVE-2021-22357
Creator: NVD / NIST
Published: 2021-08-23T20:15:14.197+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.70%

Last modified Jun 17, 2026

CVE-2021-22357 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. There is a denial of service vulnerability in Huawei products. A module cannot deal with specific messages due to validating inputs insufficiently. EPSS estimates a 0.70% chance of exploitation in the next 30 days.

Description

There is a denial of service vulnerability in Huawei products. A module cannot deal with specific messages due to validating inputs insufficiently. Attackers can exploit this vulnerability by sending specific messages to affected module. This can cause denial of service. Affected product versions include: S12700 V200R013C00SPC500, V200R019C00SPC500; S5700 V200R013C00SPC500, V200R019C00SPC500; S6700 V200R013C00SPC500, V200R019C00SPC500; S7700 V200R013C00SPC500, V200R019C00SPC500.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.70%

48.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Huawei	S12700 Firmware	v200r013c00spc500
Huawei	S12700 Firmware	v200r019c00spc500
Huawei	S5700 Firmware	v200r013c00spc500
Huawei	S5700 Firmware	v200r019c00spc500
Huawei	S6700 Firmware	v200r013c00spc500
Huawei	S6700 Firmware	v200r019c00spc500
Huawei	S7700 Firmware	v200r013c00spc500
Huawei	S7700 Firmware	v200r019c00spc500

References

https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20210512-01-dos-enVendor Advisory
https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20210512-01-dos-enVendor Advisory

Timeline

Published: Aug 23, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-22357?

How severe is CVE-2021-22357?

CVE-2021-22357 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.70% probability of exploitation in the next 30 days.

How do I fix CVE-2021-22357?

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-2021-22357?

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

Scan your code now

Source: NVD / NIST