CVE-2024-57440Public exploitNetwork attack vector

Unauthenticated service crash via oversized session cookie

Published Mar 20, 2025 · Updated Jan 20, 2026

A stack overflow in the webproc CGI in D-Link DSL-3788 firmware 1.01R1B036_EU_EN allows remote attackers to crash the service. COMM_MakeCustomMsg passes session-cookie-derived strings to sprintf, which writes beyond a 513-byte stack buffer without a length bound. No authentication or user interaction is required; the published proof of concept controls saved registers and the return address, causing a service crash.

CVSS severity7.5
High
EPSS probability0.78%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A stack overflow in the webproc CGI in D-Link DSL-3788 firmware 1.01R1B036_EU_EN allows remote attackers to crash the service. COMM_MakeCustomMsg passes session-cookie-derived strings to sprintf, which writes beyond a 513-byte stack buffer without a length bound. No authentication or user interaction is required; the published proof of concept controls saved registers and the return address, causing a service crash.

The record

CVE
CVE-2024-57440
Published
Mar 20, 2025
Updated
Jan 20, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-121, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 20, 2025CVE publishedPublication date reported by the CVE source.
  2. Jan 20, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
T1190Exploit Public-Facing Application

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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