CVE-2023-25644Public exploit

Router reboot via amplified unauthenticated cmd responses

Published Dec 14, 2023 · Updated May 22, 2025

Denial of service in ZTE MC801A and MC801A1 firmware allows remote attackers to reboot the router through local-network web requests. The unauthenticated status handler expands data supplied in the cmd parameter into a much larger response, exhausting the management service when oversized requests arrive. Access to the router's local network is required; a short request burst can reboot the device and briefly interrupt the network.

CVSS severity6.5
Medium
EPSS probability0.70%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in ZTE MC801A and MC801A1 firmware allows remote attackers to reboot the router through local-network web requests. The unauthenticated status handler expands data supplied in the cmd parameter into a much larger response, exhausting the management service when oversized requests arrive. Access to the router's local network is required; a short request burst can reboot the device and briefly interrupt the network.

The record

CVE
CVE-2023-25644
Published
Dec 14, 2023
Updated
May 22, 2025
Vendor
ZTE Corporation
Product
MC801A1
Classifications
CWE-755, CAPEC-469, T1499.002
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 14, 2023CVE publishedPublication date reported by the CVE source.
  2. May 22, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=MC801A1_Elisa1_B04 <=B04

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

ZTE Corporation · MC801A1version=MC801A1_Elisa1_B04 <=B04
ZTE Corporation · MC801Aversion=MC801A_Elisa3_B19 <=B19

Published CVSS scores

6.5ZTE CorporationCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-755Improper Handling of Exceptional Conditions
CAPEC-469HTTP DoS
T1499.002Endpoint Denial of Service: Service Exhaustion Flood

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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