Stack-Based Buffer Overflow in LemonOS HTTP Client
CVE-2025-9001

6.9MEDIUM

Key Information:

Vendor

LemonOS

Status
Lemonos
Vendor
CVE Published:
15 August 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-9001?

A vulnerability exists in the LemonOS HTTP Client affecting versions up to nightly-2024-07-12, found in the HTTPGet function of the main.cpp file. This vulnerability can be exploited via a stack-based buffer overflow, which allows an attacker to manipulate the chunkSize argument. The issue can be exploited remotely, making it a significant security concern, especially since the details have been publicly disclosed, increasing the risk of attack.

Affected Version(s)

LemonOS nightly-2024-07-12

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-2025-9001 - Proof of Concept

References

https://vuldb.com/?id.320030
vdb-entrytechnical-description
https://vuldb.com/?ctiid.320030
signaturepermissions-required
https://vuldb.com/?submit.624974
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
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

0xHamy (VulDB User)
.
CVE-2025-9001 : Stack-Based Buffer Overflow in LemonOS HTTP Client