CVE-2025-34450
CVE-2025-34450 is a high-severity vulnerability in Rtl 433 Project Rtl 433 with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- CVSS v4: 6.9
- EPSS exploit prediction: 0% (9th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-204399
- Weakness: CWE-787
- Affected product: Rtl 433 Project Rtl 433
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is 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.
- How severe is CVE-2025-34450?
- CVE-2025-34450 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2025-34450 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2025-34450?
- CVE-2025-34450 affects Rtl 433 Project Rtl 433. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2025-34450?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2025-34450 have an EU (EUVD) identifier?
- Yes. CVE-2025-34450 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204399.
- When was CVE-2025-34450 published?
- CVE-2025-34450 was published on 2025-12-18 and last updated on 2026-06-17.
References
- https://github.com/dd32/rtl_433/commit/25e47f8
- https://github.com/marlinkcyber/advisories/blob/main/advisories/MCSAID-2025-004-rtl_433-rfraw-parse-overflow.md
- https://github.com/merbanan/rtl_433/issues/3375
- https://www.vulncheck.com/advisories/merbanan-rtl-433-stack-based-buffer-overflow
Affected products (1)
- cpe:2.3:a:rtl_433_project:rtl_433:*:*:*:*:*:*:*:*
More vulnerabilities in Rtl 433 Project Rtl 433
- CVE-2022-27419 — Medium (CVSS 5.5): rtl_433 21.12 was discovered to contain a stack overflow in the function acurite_00275rm_decode at /devices/acurite.c.…
- CVE-2022-25051 — Medium (CVSS 5.5): An Off-by-one Error occurs in cmr113_decode of rtl_433 21.12 when decoding a crafted file.
All CVEs affecting Rtl 433 Project Rtl 433 →
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