Buffer overflow in Merbanan Rtl 433
CVE-2025-34450
merbanan/rtl_433 versions up to and including 25.02 and prior to commit 25e47f8 contain a stack-based buffer overflow vulnerability in the function parse_rfraw() located in src/rfraw.c. When processing crafted or excessively large raw RF input data, the application may write beyond the bounds of a stack buffer, resulting in memory corruption or a crash. This vulnerability can be exploited to cause a denial of service and, under certain conditions, may be leveraged for further exploitation depending on the execution environment and available mitigations.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (12.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 12th percentile — 12.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Merbanan Rtl 433 — versions 0, 25e47f8932f0401392ef1d3c8cc9ed5595bc894a
- Rtl 433 Project
Weakness classification (CWE)
References
- github.com/marlinkcyber/advisories/blob/main/advisories/MCSAID-2025-004-rtl_433… (Exploit, technical-description, Third Party Advisory, exploit)
- github.com/merbanan/rtl_433/issues/3375 (issue-tracking, Exploit, Patch, Issue Tracking)
- github.com/dd32/rtl_433/commit/25e47f8 (Patch, patch)
- www.vulncheck.com/advisories/merbanan-rtl-433-stack-based-buffer-overflow (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2025-34450?
- CVE-2025-34450 is a high-severity vulnerability in Merbanan Rtl 433, classified under Stack-based Buffer Overflow. CVSS score: 7.8/10. Published 2025-12-18.
- How severe is CVE-2025-34450?
- High severity. CVSS v3 base score is 7.8 out of 10.