CVE-2025-34450

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory published 2025-12-19. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
51(Track)
EG Risk 51/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
14%
KEV
Not listed

Published

December 18, 2025

Last Modified

December 31, 2025

Advisory Details (4)

Auto-updated Aug 8, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
generic

advisories/advisories/MCSAID-2025-004-rtl_433-rfraw-parse-overflow.md at main · marlinkcyber/advisories · GitHub

https://github.com/marlinkcyber/advisories/blob/main/advisories/MCSAID-2025-004-rtl_433-rfraw-parse-overflow.md
generic

merbanan/rtl_433 <= 25.02 Stack-based Buffer Overflow | Advisories | VulnCheck

https://www.vulncheck.com/advisories/merbanan-rtl-433-stack-based-buffer-overflow
generic

stack‑buffer‑overflow in parse_rfraw (src/rfraw.c:158) · Issue #3375 · merbanan/rtl_433 · GitHub

https://github.com/merbanan/rtl_433/issues/3375
github_commit

commit 25e47f8 (dd32/rtl_433)

Fix landed in dd32/rtl_433 commit 25e47f8 — awaiting tagged release

https://github.com/dd32/rtl_433/commit/25e47f8

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
rtl-43320.11-1 ... 26.07-1 (15 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
rtl-43322.11+git20230213+ds-1 ... 26.07-1 (9 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
rtl-43325.02-125.02-1+deb13u1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
rtl-43325.02-1, 25.02-1.125.12-1—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 5× in last 7d / 25× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 147 total refreshes for this CVE.

  1. 2026-09-20 20:15 UTCEPSS rescore
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Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2025-34450?
CVE-2025-34450 is a high vulnerability published on December 18, 2025. merbanan/rtl433 versions up to and including 25.02 and prior to commit 25e47f8 contain a stack-based buffer overflow vulnerability in the function parserfraw() located in src/rfraw.c. When processing crafted or excessively large raw RF input data, the application may write beyond the bounds of a…
When was CVE-2025-34450 disclosed?
CVE-2025-34450 was first published in the National Vulnerability Database on December 18, 2025, with the most recent update on December 31, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-34450 actively exploited?
CVE-2025-34450 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 86.3% of all scored CVEs.
What is the CVSS score of CVE-2025-34450?
CVE-2025-34450 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2025-34450?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-34450, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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