CVE-2020-14104Network attack vector

Unspecified impact via XQBACKUP decompression race

Published Apr 8, 2021 · Updated Aug 4, 2024

A race condition in XQBACKUP in Xiaomi Mi AIoT Router AX3600 ROM 1.0.50 allows remote attackers to trigger a decompression path error. XQBACKUP fails to preserve exclusive access to a shared resource during concurrent decompression operations, allowing execution to follow an erroneous path. Network reachability and precise timing are required; Xiaomi has not published whether the error causes a crash, code execution, or data exposure.

CVSS severity8.1
High
EPSS probability0.66%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A race condition in XQBACKUP in Xiaomi Mi AIoT Router AX3600 ROM 1.0.50 allows remote attackers to trigger a decompression path error. XQBACKUP fails to preserve exclusive access to a shared resource during concurrent decompression operations, allowing execution to follow an erroneous path. Network reachability and precise timing are required; Xiaomi has not published whether the error causes a crash, code execution, or data exposure.

The record

CVE
CVE-2020-14104
Published
Apr 8, 2021
Updated
Aug 4, 2024
Vendor
Xiaomi Corporation
Product
Mi AIoT Router AX3600
Classifications
CWE-362
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 8, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=rom version =1.0.50

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Xiaomi Corporation · Mi AIoT Router AX3600version=rom version =1.0.50

Published CVSS scores

8.1NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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