CVE-2021-21724

low-risk
Published 2021-02-26

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.

Do I need to act?

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0.03% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.4/10 Medium
LOCAL / LOW complexity

Affected Products (1)

Zxr10 8900E Firmware

Affected Vendors

Zte

References (2)

Vendor Advisory http://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1014584
Vendor Advisory http://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1014584
20
/ 100
low-risk
Severity 15/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal