CVE-2024-33278Network attack vector

Remote code execution via unchecked cookie length

Published Jun 24, 2024 · Updated Aug 2, 2024

Stack buffer overflow in ASUS RT-AX88U firmware 3.0.0.4.388_24198 allows remote attackers to execute arbitrary code via a crafted cookie. The connection_state_machine fails to validate the cookie field's length before copying it into a fixed-size buffer. No authentication or user interaction is required; successful exploitation runs attacker-controlled code on the router.

CVSS severity9.8
Critical
EPSS probability0.83%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack buffer overflow in ASUS RT-AX88U firmware 3.0.0.4.388_24198 allows remote attackers to execute arbitrary code via a crafted cookie. The connection_state_machine fails to validate the cookie field's length before copying it into a fixed-size buffer. No authentication or user interaction is required; successful exploitation runs attacker-controlled code on the router.

The record

CVE
CVE-2024-33278
Published
Jun 24, 2024
Updated
Aug 2, 2024
Vendor
ASUSTeK Computer Inc.
Product
RT-AX88U Firmware
Classifications
CWE-120, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 24, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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=3.0.0.4.388_24198

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ASUSTeK Computer Inc. · RT-AX88U Firmwareversion=3.0.0.4.388_24198

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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