Global Buffer Overflow Vulnerability in Genymobile Scrcpy
CVE-2025-34449

6.9MEDIUM

Key Information:

Vendor

Genymobile

Status
Scrcpy
Vendor
CVE Published:
18 December 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-34449?

A vulnerability exists in Genymobile's scrcpy, where versions up to 3.3.3 are susceptible to a global buffer overflow triggered by the sc_read32be function. This occurs during the processing of specially crafted device messages via the sc_device_msg_deserialize() and process_msgs() functions. Successful exploitation may result in memory corruption or application crashes. Depending on the specific execution environment, it may also open avenues for further exploitation.

Affected Version(s)

scrcpy 0 <= 3.3.3

scrcpy commit 3e40b24

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-2025-34449 - Proof of Concept

References

https://github.com/marlinkcyber/advisories/blob/main/advi...
technical-descriptionexploit
https://github.com/Genymobile/scrcpy/issues/6415
issue-tracking
https://github.com/Genymobile/scrcpy/commit/3e40b24
patch

CVSS V4

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

Vlatko Kosturjak with Marlink Cyber
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CVE-2025-34449 : Global Buffer Overflow Vulnerability in Genymobile Scrcpy