CVE-2023-7222Network attack vector

Authenticated memory corruption via unchecked submit-url length

Published Jan 9, 2024 · Updated Nov 14, 2024

Buffer overflow in TOTOLINK X2000R 1.0.0-B20221212.1452 allows remote authenticated users to overwrite memory via an HTTP POST request. The /bin/boa formTmultiAP handler processes the submit-url argument without enforcing the destination buffer's size, causing an out-of-bounds write. Administrative access is required; the public record does not establish whether exploitation yields code execution or only a service crash.

CVSS severity9.8
Critical
EPSS probability1.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in TOTOLINK X2000R 1.0.0-B20221212.1452 allows remote authenticated users to overwrite memory via an HTTP POST request. The /bin/boa formTmultiAP handler processes the submit-url argument without enforcing the destination buffer's size, causing an out-of-bounds write. Administrative access is required; the public record does not establish whether exploitation yields code execution or only a service crash.

The record

CVE
CVE-2023-7222
Published
Jan 9, 2024
Updated
Nov 14, 2024
Vendor
TOTOLINK
Product
X2000R
Classifications
CWE-787, CWE-120
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jan 9, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 14, 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=1.0.0-B20221212.1452

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

TOTOLINK · X2000Rversion=1.0.0-B20221212.1452

Published CVSS scores

7.2VulDBCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.3VulDBAV:N/AC:L/Au:M/C:C/I:C/A:C
7.2VulDBCVSS:3.1/AV:N/AC:L/PR:H/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.

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

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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