A ZTE product has a memory leak vulnerability.

published 2021-02-26 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-8896

cvss: 4.4; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 30%
public exploits: 0; none known

A ZTE product has a memory leak vulnerability. Due to the product's improper handling of memory release in certain scenarios, a local attacker with device permissions repeatedly attenuated the optical signal to cause memory leak and abnormal service. This affects: ZXR10 8900E, all versions up to V3.03.20R2B30P1.

Exploit prediction

0.37% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	4.4	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
NVD	2.0	2.1	AV:L/AC:L/Au:N/C:N/I:N/A:P

Affected products

n/a ZXR10 8900E

Classification

Weakness

CWE-401 Missing Release of Memory after Effective Lifetime

References

support.zte.com.cn /support/news/LoopholeInfoDetail.aspx?newsId=1014584
vendor-advisory

Sources

CVE List CVE-2021-21724
NVD CVE-2021-21724

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Summary