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
Trending — 3 sources updated this weekElevated
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.8Exploit: NoneExposed: 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
9.7%
KEV
Not listed

Published

December 18, 2025

Last Modified

December 31, 2025

References (5)

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 47× 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.

  1. 2026-07-25 14:17 UTCEPSS rescore
  2. 2026-07-25 14:17 UTCEPSS rescore
  3. 2026-07-24 14:17 UTCEPSS rescore
  4. 2026-07-23 11:49 UTCOSV refresh
  5. 2026-07-23 02:54 UTCEG score recompute
  6. 2026-07-22 14:07 UTCEPSS rescore
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  8. 2026-07-21 15:24 UTCEPSS rescore
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  1. 2026-07-11 08:27 UTCEPSS rescore
  2. 2026-07-09 19:09 UTCEPSS rescore
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  4. 2026-07-07 13:45 UTCEPSS rescore
  5. 2026-07-06 16:27 UTCEPSS rescore
  6. 2026-07-06 16:27 UTCEPSS rescore
  7. 2026-07-06 07:02 UTCOSV refresh
  8. 2026-07-06 02:23 UTCEPSS rescore
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  21. 2026-06-27 03:08 UTCEPSS rescore
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  23. 2026-06-25 13:49 UTCEPSS rescore
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  27. 2026-06-23 21:32 UTCEPSS rescore
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  31. 2026-06-21 14:56 UTCEPSS rescore
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  35. 2026-06-19 19:25 UTCEPSS rescore
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  37. 2026-06-18 17:52 UTCEPSS rescore
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  39. 2026-06-17 18:44 UTCOSV refresh
  40. 2026-06-17 17:52 UTCEPSS rescore
  41. 2026-06-16 17:52 UTCEPSS rescore
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  43. 2026-06-14 23:17 UTCEPSS rescore
  44. 2026-06-12 23:11 UTCEPSS rescore
  45. 2026-06-11 14:00 UTCEPSS rescore
  46. 2026-06-10 22:18 UTCEPSS rescore
  47. 2026-06-10 13:22 UTCEPSS rescore
  48. 2026-06-08 14:16 UTCEPSS rescore
  49. 2026-06-08 14:16 UTCEPSS rescore
  50. 2026-06-07 15:24 UTCEPSS rescore
  51. 2026-06-06 13:47 UTCEPSS rescore
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  53. 2026-06-05 22:46 UTCEPSS rescore
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  64. 2026-05-31 00:16 UTCEPSS rescore
  65. 2026-05-29 17:13 UTCEG score recompute
  66. 2026-05-29 17:13 UTCGHSA enrichment
  67. 2026-05-29 13:44 UTCEPSS rescore

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 9.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
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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