CVE-2025-34450: merbanan/rtl_433 versions up to and including 25.02 and prior to commit 25e47f8 contain a stack-based buffer o

Q: How do I fix CVE-2025-34450?

rtl 433: upgrade to newer than 25.02. Exact commands for each OS are on this page.

Q: Is CVE-2025-34450 being exploited?

CVE-2025-34450 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-34450 affect?

CVE-2025-34450 affects rtl 433. Severity is high (CVSS 7.8). 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 in

Q: How urgent is CVE-2025-34450?

Priority 36/100. High severity; Public exploit reference

Routine

HIGH 7.8UPGRADE

CVE-2025-34450 is a high-severity flaw (CVSS 7.8) affecting rtl 433. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 87%)
CISA exploited list	No
Weakness	CWE-121, CWE-787
Published	2025-12-18
Last modified	2026-06-17

Publisher (CNA): VulnCheck · Vendor: rtl 433 project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-12-18 22:15 UTCPublished CVE record published
2026-06-17 09:14 UTCUpdated Record last modified

rtl 433 project rtl 433 UPGRADE

Affected: <= 25.02

Fixed in: newer than 25.02

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy rtl-433 || rpm -q rtl-433 || rtl-433 --version

2. UPGRADE to newer than 25.02 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade rtl-433

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade rtl-433

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-34450?

rtl 433: upgrade to newer than 25.02. Exact commands for each OS are on this page.

Is CVE-2025-34450 being exploited?

CVE-2025-34450 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-34450 affect?

CVE-2025-34450 affects rtl 433. Severity is high (CVSS 7.8). 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 in

How urgent is CVE-2025-34450?

Priority 36/100. High severity; Public exploit reference

References

← Back to latest CVEs