Vulnerability · Published Dec 18, 2025 · Assigned by VulnCheck

CVE-2025-34449Genymobile/scrcpy <= 3.3.3 Global Buffer Overflow

Medium 6.9

In plain English

A medium-severity unsafe deserialization in scrcpy from Genymobile. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities).

Severity (CVSS 4.0)6.9Medium

Exploit odds (30 days)0.4%top 63.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Genymobile/scrcpy versions up to and including 3.3.3, prior to commit 3e40b24, contain a buffer overflow vulnerability in the sc_device_msg_deserialize() function. A compromised device can send crafted messages that cause out-of-bounds reads, which may result in memory corruption or a denial-of-service condition. This vulnerability may allow further exploitation on the host system.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Ubuntu:22.04:LTS	scrcpy	no fix listed	UBUNTU-CVE-2025-34449
Ubuntu:24.04:LTS	scrcpy	no fix listed	UBUNTU-CVE-2025-34449
Ubuntu:25.10	scrcpy	no fix listed	UBUNTU-CVE-2025-34449
Ubuntu:26.04:LTS	scrcpy	no fix listed	UBUNTU-CVE-2025-34449
Ubuntu:26.10	scrcpy	no fix listed	UBUNTU-CVE-2025-34449

Affected products (as reported)

Vendor	Product	Versions
Genymobile	scrcpy	0 – through 3.3.3

Weakness: CWE-502 · Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

References

https://github.com/marlinkcyber/advisories/blob/main/advisories/MCSAID-2025-003-scrcpy-global-buffer-overflow.md technical-description, exploit
https://github.com/Genymobile/scrcpy/issues/6415 issue-tracking
https://github.com/Genymobile/scrcpy/commit/3e40b24 patch
https://www.vulncheck.com/advisories/genymobile-scrcpy-global-buffer-overflow third-party-advisory