CVE-2024-35397

Unauthenticated command execution via hostTime injection

Published May 28, 2024 · Updated Jul 9, 2026

Command injection in TOTOLINK CP900L firmware 4.1.5cu.798_B20221228 allows remote attackers to execute arbitrary commands via a crafted request. The NTPSyncWithHost function incorporates the attacker-controlled hostTime parameter into operating-system command syntax without neutralizing command elements. An adjacent-network position is required; no authentication or user interaction is needed, and exploitation grants command execution in the firmware environment.

CVSS severity8.8
High
EPSS probability15.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in TOTOLINK CP900L firmware 4.1.5cu.798_B20221228 allows remote attackers to execute arbitrary commands via a crafted request. The NTPSyncWithHost function incorporates the attacker-controlled hostTime parameter into operating-system command syntax without neutralizing command elements. An adjacent-network position is required; no authentication or user interaction is needed, and exploitation grants command execution in the firmware environment.

The record

CVE
CVE-2024-35397
Published
May 28, 2024
Updated
Jul 9, 2026
Vendor
TOTOLINK
Product
TOTOLINK CP900L Firmware
Classifications
CWE-77, T1059
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 28, 2024CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 2026Record 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=4.1.5cu798_b20221228

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

TOTOLINK · TOTOLINK CP900L Firmwareversion=4.1.5cu798_b20221228

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:A/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
T1059Command and Scripting Interpreter

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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