CVE-2022-29399Public exploitNetwork attack vector

Memory corruption via unchecked URL parameter copy

Published May 10, 2022 · Updated Aug 3, 2024

Out-of-bounds write in the web component of TOTOLINK N600R 4.3.0cu.7647_B20210106 allows remote attackers to corrupt process memory. FUN_00415bf0 in cstecgi.cgi copies the JSON url parameter directly into stack-local storage without checking its length. A network-reachable web interface is sufficient, and the published proof demonstrates the overflow but does not establish arbitrary code execution.

CVSS severity9.8
Critical
EPSS probability1.73%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in the web component of TOTOLINK N600R 4.3.0cu.7647_B20210106 allows remote attackers to corrupt process memory. FUN_00415bf0 in cstecgi.cgi copies the JSON url parameter directly into stack-local storage without checking its length. A network-reachable web interface is sufficient, and the published proof demonstrates the overflow but does not establish arbitrary code execution.

The record

CVE
CVE-2022-29399
Published
May 10, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787
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.

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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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write

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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