CyberSecBulletin
CVE-2025-46582NVD status: Deferred

ZXMP M721: Use of Hard-coded Cryptographic Key

Published Updated By the CyberSecBulletin desk

CVE-2025-46582 is a high-severity use of hard-coded cryptographic key vulnerability in ZXMP M721 from ZTE, with a CVSS 3.1 base score of 7.7 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. Affected ZXMP M721 versions: ZXMPM721V5.30.020.001P01. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.34% chance of exploitation within 30 days, which is low compared with other CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Check which version of ZXMP M721 you run against the affected versions below, and install the vendor's latest release.

Affected products and versions

VendorProductAffected versionsFixed in
ZTEZXMP M721ZXMPM721V5.30.020.001P01Not stated

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
NetworkCan be exploited remotely over a network, including the internet.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
LowA basic user account is enough.
User interaction
NoneNo action by a victim is required.
Scope
ChangedThe attack can reach beyond the vulnerable component into other systems.
Confidentiality
HighAll data handled by the component can be read.
Integrity
NoneNothing can be modified.
Availability
NoneAvailability is not affected.

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N. Scored by CNA (zte.com.cn).

Official description

A private key disclosure vulnerability exists in ZTE's ZXMP M721 product. A low-privileged user can bypass authorization checks to view the device's communication private key, resulting in key exposure and impacting communication security.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Use of Hard-coded Cryptographic Key

The product uses a hard-coded, unchangeable cryptographic key.

How developers prevent this class of flaw

  • Prevention schemes mirror that of hard-coded password storage.

More Use of Hard-coded Cryptographic Key vulnerabilities (CWE-321)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
  3. Record last changed materially (score, affected products, status or references).

References

Recent Use of Hard-coded Cryptographic Key vulnerabilities

Spotted an error? Tell us.