CVE-2022-29377Network attack vector

Unauthenticated service crash via oversized content length

Published May 24, 2022 · Updated Aug 3, 2024

Stack overflow in infostat.cgi in TOTOLINK A3600R 4.1.2cu.5182_B20201102 allows remote attackers to crash the router via an HTTP request. The CGI handler uses attacker-controlled CONTENT_LENGTH as the fread byte count without bounding it to the destination stack buffer, causing an out-of-bounds write. No authentication or user interaction is required, and the published impact is limited to service interruption rather than data access or modification.

CVSS severity7.5
High
EPSS probability1.05%
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 infostat.cgi in TOTOLINK A3600R 4.1.2cu.5182_B20201102 allows remote attackers to crash the router via an HTTP request. The CGI handler uses attacker-controlled CONTENT_LENGTH as the fread byte count without bounding it to the destination stack buffer, causing an out-of-bounds write. No authentication or user interaction is required, and the published impact is limited to service interruption rather than data access or modification.

The record

CVE
CVE-2022-29377
Published
May 24, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 24, 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

5.0NIST NVDAV:N/AC:L/Au:N/C:N/I:N/A:P
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.

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-787Out-of-bounds Write
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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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