CVE-2021-21723

HIGH
7.5
CVSS Score
Published: January 21, 2021 at 07:05 PM UTC
Updated: June 17, 2026 at 03:36 AM UTC
10 products affected across 1 vendorZXR10 9908-s FirmwareZXR10 9904-s FirmwareZXR10 9904 Firmware

Using <ZXR10 9904, ZXR10 9908, ZXR10 9916, ZXR10 9904-S, ZXR10 9908-S> by N/A?

Get instant alerts when new vulnerabilities affect <ZXR10 9904, ZXR10 9908, ZXR10 9916, ZXR10 9904-S, ZXR10 9908-S> - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
HIGH7.5
Exploit prediction
EPSS 1%

Description

Some ZTE products have a DoS vulnerability. Due to the improper handling of memory release in some specific scenarios, a remote attacker can trigger the vulnerability by performing a series of operations, resulting in memory leak, which may eventually lead to device denial of service. This affects: ZXR10 9904, ZXR10 9908, ZXR10 9916, ZXR10 9904-S, ZXR10 9908-S; all versions up to V1.01.10.B12.

Affected

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

v ≤ v1.01.10.b12
zte-zxr10-9904 (same device)
v ≤ v1.01.10.b12
zte-zxr10-9904-s (same device)
v ≤ v1.01.10.b12
zte-zxr10-9908 (same device)
v ≤ v1.01.10.b12
zte-zxr10-9908-s (same device)
v ≤ v1.01.10.b12
zte-zxr10-9916 (same device)
v ≤ 1.01.10.B12
v ≤ 1.01.10.B12
v ≤ 1.01.10.B12
v ≤ 1.01.10.B12
v ≤ 1.01.10.B12

Remediation

No guide yet

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

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-401

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card