CVE-2021-39999

7.5 highEPSS 0.7%

High (7.5) in huawei ese620x vess firmware. EPSS 0.7% chance of exploitation in the next 30 days.

There is a buffer overflow vulnerability in eSE620X vESS V100R001C10SPC200 and V100R001C20SPC200. An attacker can exploit this vulnerability by sending a specific message to the target device due to insufficient validation of packets. Successful exploit could cause a denial of service condition.

Severity

CVSS 3.1

7.5 high

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

EPSS: 0.7% chance of exploitation in the next 30 days; higher than 52% of CVEs (scores of 2026-10-31)
CWE: CWE-120
Published: 2022-07-12
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

huawei:ese620x_vess_firmware

References

https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20211201-01-buffer-en
https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20211201-01-buffer-en

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