There is a use-after-free (UAF) vulnerability in Huawei products.

published 2021-10-27 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-23698

cvss: 6.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 19%
public exploits: 0; none known

There is a use-after-free (UAF) vulnerability in Huawei products. An attacker may craft specific packets to exploit this vulnerability. Successful exploitation may cause the service abnormal. Affected product versions include:CloudEngine 12800 V200R005C10SPC800,V200R019C00SPC800;CloudEngine 5800 V200R005C10SPC800,V200R019C00SPC800;CloudEngine 6800 V200R005C10SPC800,V200R005C20SPC800,V200R019C00SPC800;CloudEngine 7800 V200R005C10SPC800,V200R019C00SPC800.

Exploit prediction

0.27% chance of exploitation in the next 30 days, higher than 19% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	6.5	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD	2.0	3.3	AV:A/AC:L/Au:N/C:N/I:N/A:P

Affected products

n/a CloudEngine 12800;CloudEngine 5800;CloudEngine 6800;CloudEngine 7800

Classification

Weakness

CWE-416 Use After Free

References

huawei.com /en/psirt/security-advisories/huawei-sa-20211008-01-cloudengine-en
vendor-advisory

Sources

CVE List CVE-2021-37122
NVD CVE-2021-37122

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Summary