Out-of-Bounds Read Vulnerability in FascinatedBox Lily
CVE-2026-3390

4.8MEDIUM

Key Information:

Vendor

Fascinatedbox

Status
Lily
Vendor
CVE Published:
1 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-3390?

A vulnerability has been identified in FascinatedBox Lily, particularly in the Error Reporting component located in the src/lily_build_error.c file. This issue arises from the function patch_line_end, which is susceptible to an out-of-bounds read condition. Although the exploitation of this vulnerability can only occur within a local environment, it poses significant security concerns, especially since publicly available exploits for this vulnerability exist. The development team has been notified of this issue, but there has been no response regarding a resolution. Administrators are advised to take precautionary steps to safeguard their systems.

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Deploy the Patch

Affected Version(s)

lily 2.0

lily 2.1

lily 2.2

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-2026-3390 - Proof of Concept

References

https://vuldb.com/?id.348276
vdb-entrytechnical-description
https://vuldb.com/?ctiid.348276
signaturepermissions-required
https://vuldb.com/?submit.761326
third-party-advisory

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Local
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

Oneafter (VulDB User)
JSON
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