CVE-2023-54330

CRITICAL EPSS 47.7%
Published Jan 13, 20265mo ago · Modified Jun 17, 20262w ago
9.3 CVSS 4.0
Critical
Find Similar
Published Jan 13, 2026 5mo ago
Last Modified Jun 17, 2026 2w ago

Description

Inbit Messenger versions 4.6.0 to 4.9.0 contain a remote stack-based buffer overflow vulnerability that allows unauthenticated attackers to execute arbitrary code by sending malformed network packets. Attackers can craft a specially designed payload targeting the messenger's network handler to overwrite the Structured Exception Handler (SEH) and execute shellcode on vulnerable Windows systems.

CVSS Details

Base Score
9.3
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
47.7% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 2

CWE-121
CWE-787 Out-of-bounds Write Memory Safety

Affected Products 1

VendorProductVersionRange
inbitinbit_messenger*≥4.6.0  –  ≤4.9.0

References 4

  • github.com https://github.com/a-rey/exploits/blob/main/writeups/Inbit_Messenger/v4.6.0/writeup.md
    ExploitThird Party Advisory
  • web.archive.org https://web.archive.org/web/20200122082432/https://www.softsea.com/review/Inbit-Messenger-Basic-Edition.html
    Product
  • exploit-db.com https://www.exploit-db.com/exploits/51126
    ExploitThird Party Advisory
  • vulncheck.com https://www.vulncheck.com/advisories/inbit-messenger-unauthenticated-remote-seh-overflow
    Third Party Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.