CVE-2022-43104Public exploitNetwork attack vector

Remote firmware compromise via wpapsk_crypto stack overflow

Published Nov 3, 2022 · Updated May 5, 2025

Stack overflow in Tenda AC23 16.03.07.45_cn allows remote attackers to compromise the firmware process through crafted wpapsk_crypto input. The fromSetWirelessRepeat handler fails to reject an oversized wpapsk_crypto value before it reaches stack-backed storage, causing data to overwrite adjacent memory. No authentication or user interaction is required, and exploitation can alter process behavior or interrupt the router service.

CVSS severity9.8
Critical
EPSS probability0.97%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack overflow in Tenda AC23 16.03.07.45_cn allows remote attackers to compromise the firmware process through crafted wpapsk_crypto input. The fromSetWirelessRepeat handler fails to reject an oversized wpapsk_crypto value before it reaches stack-backed storage, causing data to overwrite adjacent memory. No authentication or user interaction is required, and exploitation can alter process behavior or interrupt the router service.

The record

CVE
CVE-2022-43104
Published
Nov 3, 2022
Updated
May 5, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1210
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 3, 2022CVE publishedPublication date reported by the CVE source.
  2. May 5, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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 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 exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1210Exploitation of Remote Services

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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