CVE-2026-51272

No security impact after CNA investigation

Published Jul 30, 2026 · Updated Jul 30, 2026

The CVE record for ESP32-audioI2S 3.4.5 is rejected because further investigation found no security issue in latinToUTF8(). The withdrawn description had alleged that latinToUTF8() doubled the input length for heap allocation before writing Latin-1 text as UTF-8. MITRE removed the affected-product claim, CWE, CVSS assessment, SSVC decision, and references when the CNA withdrew the record.

CVSS severityUnavailable
Unscored
EPSS probabilityUnavailable
No score available in this record
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

The CVE record for ESP32-audioI2S 3.4.5 is rejected because further investigation found no security issue in latinToUTF8(). The withdrawn description had alleged that latinToUTF8() doubled the input length for heap allocation before writing Latin-1 text as UTF-8. MITRE removed the affected-product claim, CWE, CVSS assessment, SSVC decision, and references when the CNA withdrew the record.

The record

CVE
CVE-2026-51272
Published
Jul 30, 2026
Updated
Jul 30, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Jul 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 30, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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