CVE-2021-21724

4.4 mediumEPSS 0.4%

Medium (4.4) in zte zxr10 8900e firmware. EPSS 0.4% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

4.4 medium

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

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 30% of CVEs (scores of 2026-11-01)
CWE: CWE-401
Published: 2021-02-26
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

zte:zxr10_8900e_firmware

References

http://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1014584
http://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1014584

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