Buffer Overflow Vulnerability in markparticle WebServer by markparticle
CVE-2025-3845

6.9MEDIUM

Key Information:

Vendor

Markparticle

Status
Webserver
Vendor
CVE Published:
21 April 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-3845?

A vulnerability has been identified in the markparticle WebServer, specifically affecting versions up to 1.0, where the Buffer::HasWritten function in buffer.cpp can be manipulated. This vulnerability enables attackers to initiate a buffer overflow by controlling the writePos_ argument, allowing for potential remote exploits. The implications of this flaw are significant, as it could lead to arbitrary memory writing and unauthorized access. Given that the exploit has been made public, users and organizations should take immediate steps to mitigate this risk and secure their WebServer installations.

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Affected Version(s)

WebServer 1.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2025-3845 - Proof of Concept

References

https://vuldb.com/?id.305773
vdb-entrytechnical-description
https://vuldb.com/?ctiid.305773
signaturepermissions-required
https://vuldb.com/?submit.556273
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

s0l42 (VulDB User)
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