CVE-2024-31807Public exploitNetwork attack vector

Unauthenticated command execution via hostTime injection

Published Apr 8, 2024 · Updated Aug 13, 2024

Command injection in TOTOLINK EX200 Firmware 4.0.3c.7646_B20201211 allows remote attackers to execute arbitrary commands via hostTime. The NTPSyncWithHost function in system.so incorporates the attacker-controlled hostTime value into command execution without neutralizing shell syntax. No authentication or user interaction is required, and successful injection runs commands in the appliance firmware context with control over device data and operation.

CVSS severity9.8
Critical
EPSS probability1.37%
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 EX200 Firmware 4.0.3c.7646_B20201211 allows remote attackers to execute arbitrary commands via hostTime. The NTPSyncWithHost function in system.so incorporates the attacker-controlled hostTime value into command execution without neutralizing shell syntax. No authentication or user interaction is required, and successful injection runs commands in the appliance firmware context with control over device data and operation.

The record

CVE
CVE-2024-31807
Published
Apr 8, 2024
Updated
Aug 13, 2024
Vendor
TOTOLINK
Product
EX200 Firmware
Classifications
CWE-94, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 8, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 13, 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=4.0.3c.7646_b20201211

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

TOTOLINK · EX200 Firmwareversion=4.0.3c.7646_b20201211

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/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.

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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-94Improper Control of Generation of Code ('Code Injection')
T1059Command and Scripting Interpreter

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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