EUVD-2026-49865
GHSA-fg54-ghcv-v85w
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary rating from Vendor (mitre) · only source for this CVE.
CVSS VectorVendor: mitre
Lifecycle Timeline
3DescriptionCVE.org
schreibfaul1 ESP32-audioI2S 3.4.5 has a heap-based buffer overflow vulnerability in the URL path concatenation and encoding module. The application splices untrusted extension path and attacker-controlled query string into a path buffer, then invokes urlencode without validating the final string length. Remote attackers can construct an oversized malicious URL path and query string to trigger out-of-bounds heap write, resulting in arbitrary code execution, information disclosure, service crash, or privilege escalation.
AnalysisAI
Heap-based buffer overflow in ESP32-audioI2S version 3.4.5 allows remote attackers to execute arbitrary code, disclose information, crash the service, or escalate privileges by sending a malicious URL with an oversized path and query string to the vulnerable urlencode function. No active exploitation has been confirmed by CISA KEV, and no EPSS score is available at this time.
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Same weakness CWE-122 – Heap-based Buffer Overflow
View allSame technique Privilege Escalation
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External POC / Exploit Code
Leaving vuln.today