CVE-2024-28038Public exploitNetwork attack vector

Unauthenticated code execution via oversized session cookie

Published Nov 26, 2024 · Updated Nov 4, 2025

Stack buffer overflow in Sharp and Toshiba Tec MFP web interfaces allows remote attackers to execute code through a crafted cookie. The HTTP handler copies an oversized MFPSESSIONID cookie into an approximately 639-byte stack buffer in the main program, corrupting control data. No authentication or user action is required, but the attacker must reach the device web interface; exploitation can crash the main process or execute code.

CVSS severity9.0
Critical
EPSS probability2.59%
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 Sharp and Toshiba Tec MFP web interfaces allows remote attackers to execute code through a crafted cookie. The HTTP handler copies an oversized MFPSESSIONID cookie into an approximately 639-byte stack buffer in the main program, corrupting control data. No authentication or user action is required, but the attacker must reach the device web interface; exploitation can crash the main process or execute code.

The record

CVE
CVE-2024-28038
Published
Nov 26, 2024
Updated
Nov 4, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-121, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 26, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 4, 2025Record 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

9.0JPCERT/CCCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/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-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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