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CVE-2021-21724

MEDIUM
4.4
CVSS Score
Published: February 26, 2021 at 02:37 AM UTC
Updated: June 17, 2026 at 03:36 AM UTC
2 products affected across 1 vendorZXR10 8900E FirmwareZxr10 8900E

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Severity
MEDIUM4.4
Exploit prediction
EPSS 0.4%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

ZXR10 8900E Firmware· ZTE
95%
v ≤ 3.03.20r2b30p1
zte-zxr10-8900e (same device)
Zxr10 8900E· ZTEdevice
80%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_MISCVendor Advisory
Source: [email protected]
http://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1014584

CVSS

4.4MEDIUM[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-401

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