CVE-2024-39225Public exploitNetwork attack vector

Root code execution via predictable administrator SID

Published Aug 6, 2024 · Updated Aug 15, 2024

Authentication bypass in GL.iNet router firmware allows remote attackers to execute code as root by predicting an active administrator SID. The session generator seeds srand() with boot time and uses rand(), allowing an attacker who estimates that timestamp to reproduce a valid SID. Exploitation requires an administrator to be logged in and the boot-time seed to be targeted accurately; success grants complete control of the router.

CVSS severity9.8
Critical
EPSS probability14.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in GL.iNet router firmware allows remote attackers to execute code as root by predicting an active administrator SID. The session generator seeds srand() with boot time and uses rand(), allowing an attacker who estimates that timestamp to reproduce a valid SID. Exploitation requires an administrator to be logged in and the boot-time seed to be targeted accurately; success grants complete control of the router.

The record

CVE
CVE-2024-39225
Published
Aug 6, 2024
Updated
Aug 15, 2024
Vendor
GL.iNet
Product
GL.iNet AR300M16 Firmware
Classifications
CWE-307, T1550.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 6, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.3.11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

GL.iNet · GL.iNet AR300M16 Firmwareversion=4.3.11
GL.iNet · GL.iNet MT6000 Firmwareversion=4.5.8
GL.iNet · GL.iNet MT2500 Firmwareversion=4.5.16
GL.iNet · X3000version=4.4.8
GL.iNet · GL.iNet AP1300 Firmwareversion=3.217
GL.iNet · GL.iNet N300 Firmwareversion=3.216
GL.iNet · GL.iNet MT300N-V2 Firmwareversion=4.3.11
GL.iNet · GL-SF1200version=3.216
GL.iNet · GL.iNet AR750 Firmwareversion=4.3.11
GL.iNet · GL-SFT1200 Opalversion=4.3.11
GL.iNet · GL.iNet MT3000 Firmwareversion=4.5.16
GL.iNet · GL-X300B Collieversion=4.5.16
GL.iNet · XE3000version=4.4.8
GL.iNet · GL.iNet MT1300 Firmwareversion=4.3.11
GL.iNet · GL.iNet B2200 Firmwareversion=3.216
GL.iNet · GL.iNet A1300 Firmwareversion=4.5.16
GL.iNet · GL.iNet MV1000 Firmwareversion=3.216
GL.iNet · GL.iNet B1300 Firmwareversion=4.3.11
GL.iNet · GL.iNet AR750S Firmwareversion=4.3.11
GL.iNet · Puli (GL-XE300)version=4.3.16
GL.iNet · Spitz (GL-X750)version=4.3.11
GL.iNet · GL.iNet AX1800 Firmwareversion=4.5.16
GL.iNet · GL.iNet AXT1800 Firmwareversion=4.5.16
GL.iNet · GL.iNet AR300M Firmwareversion=4.3.11
GL.iNet · GL.iNet E750 Firmwareversion=4.3.12
GL.iNet · GL.iNet MV1000W Firmwareversion=3.216
GL.iNet · GL-USB150 (Microuter)version=3.216
GL.iNet · GL.iNet S1300 Firmwareversion=3.216

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.

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 exploitPublished

Weakness, pattern, technique

CWE-307Improper Restriction of Excessive Authentication Attempts
T1550.004Use Alternate Authentication Material: Web Session Cookie

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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