CVE-2026-51251

✕ Withdrawn — historical dataHIGHPre-NVD 7.5Elevated
7.5CVSS
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: Elevated riskExposed: 0

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

Schreibfaul1 ESP32-audioI2S 3.4.5 has a buffer overflow vulnerability in the MP3Decoder::decode() function of the MP3 decoder due to missing size validation on untrusted mainDataBegin and nSlots values.

CVSS v3
7.5
EchelonGraph score
Not yet assessedThis CVE record was withdrawn by its numbering authority, so there is no vulnerability to rate.
EG Score
—
EG Risk
—
EPSS PROB
0%
EPSS %ILE
23%
KEV
Not listed

Published

July 28, 2026

Last Modified

July 28, 2026

Advisory Details (2)

Auto-updated Jul 28, 2026
No patch confirmed yet.
generic

cveadvisory-/CVE-2026-51251 at main · programmervuln/cveadvisory- · GitHub

https://github.com/programmervuln/cveadvisory-/blob/main/CVE-2026-51251
generic

ESP32-audioI2S/src/mp3_decoder/mp3_decoder.cpp at master · schreibfaul1/ESP32-audioI2S · GitHub

https://github.com/schreibfaul1/ESP32-audioI2S/blob/master/src/mp3_decoder/mp3_decoder.cpp

Vendor Advisories for CVE-2026-51251(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 2× in last 7d / 12× 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. 2026-08-29 23:38 UTCGHSA enrichment
  2. 2026-08-25 14:20 UTCGHSA enrichment
  3. 2026-08-22 12:27 UTCGHSA enrichment
  4. 2026-08-19 10:44 UTCGHSA enrichment
  5. 2026-08-16 08:52 UTCGHSA enrichment
  6. 2026-08-13 07:10 UTCGHSA enrichment
  7. 2026-08-10 05:11 UTCGHSA enrichment
  8. 2026-08-07 03:29 UTCGHSA enrichment
  9. 2026-08-04 01:47 UTCGHSA enrichment
  10. 2026-08-01 04:16 UTCEPSS rescore
  11. 2026-08-01 00:05 UTCEG score recompute▼ 7.50
  12. 2026-08-01 00:05 UTCGHSA enrichment
  13. 2026-07-31 11:20 UTCGHSA enrichment
  14. 2026-07-30 22:32 UTCEG score recompute
  15. 2026-07-30 22:32 UTCGHSA enrichment
  16. 2026-07-30 16:28 UTCEPSS rescore
  17. 2026-07-30 09:47 UTCEG score recompute
  18. 2026-07-30 09:46 UTCGHSA enrichment
  19. 2026-07-30 01:30 UTCEPSS rescore
  20. 2026-07-29 21:01 UTCGHSA enrichment
  21. 2026-07-29 08:14 UTCEG score recompute
  22. 2026-07-29 08:14 UTCGHSA enrichment
  23. 2026-07-28 19:27 UTCEG score recompute
  24. 2026-07-28 19:27 UTCGHSA enrichment
  25. 2026-07-28 18:59 UTCEG score recompute▲ 7.50
Show 7 more
  1. 2026-07-28 18:59 UTCGHSA enrichment
  2. 2026-07-28 18:57 UTCMITRE cvelistV5CVSS v3 → 7.5 · severity → HIGH
  3. 2026-07-28 16:24 UTCGHSA enrichment
  4. 2026-07-28 15:41 UTCGHSA enrichment
  5. 2026-07-28 15:37 UTCNVD update
  6. 2026-07-28 14:39 UTCEG score recompute
  7. 2026-07-28 14:38 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-51251?
CVE-2026-51251 is a high vulnerability published on July 28, 2026. Schreibfaul1 ESP32-audioI2S 3.4.5 has a buffer overflow vulnerability in the MP3Decoder::decode() function of the MP3 decoder due to missing size validation on untrusted mainDataBegin and nSlots values.
When was CVE-2026-51251 disclosed?
CVE-2026-51251 was first published in the National Vulnerability Database on July 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-51251 actively exploited?
CVE-2026-51251 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 76.9% of all scored CVEs.
What is the CVSS score of CVE-2026-51251?
CVE-2026-51251 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-51251?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-51251, 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.

Dependency Blast Radius

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