CVE-2022-29392Public exploitNetwork attack vector

Unauthenticated memory corruption via unbounded comment copy

Published May 10, 2022 · Updated Aug 3, 2024

Stack overflow in TOTOLINK N600R 4.3.0cu.7647_B20210106 allows remote attackers to corrupt process memory via a crafted comment value. FUN_00418c24 in the router web CGI copies the JSON comment value into stack-local storage without checking its length. The unauthenticated web interface is network reachable; the published proof of concept demonstrates the overwrite in emulation, but not command execution.

CVSS severity9.8
Critical
EPSS probability1.67%
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 TOTOLINK N600R 4.3.0cu.7647_B20210106 allows remote attackers to corrupt process memory via a crafted comment value. FUN_00418c24 in the router web CGI copies the JSON comment value into stack-local storage without checking its length. The unauthenticated web interface is network reachable; the published proof of concept demonstrates the overwrite in emulation, but not command execution.

The record

CVE
CVE-2022-29392
Published
May 10, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 10, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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?

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

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10.0NIST NVDAV:N/AC:L/Au:N/C:C/I:C/A:C

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 exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1190Exploit Public-Facing Application

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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