AUGUST 4, 2026
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Case File

CVE-2023-52389

CRITICAL · CVSS 9.8 EPSS 0.85% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2024-01-27 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. Public exploit code or proof-of-concept references have been detected in its references.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
poc

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2023-52389
Severity
CRITICAL
CVSS
9.8
EPSS
0.85%

Original NVD Description

UTF32Encoding.cpp in POCO has a Poco::UTF32Encoding integer overflow and resultant stack buffer overflow because Poco::UTF32Encoding::convert() and Poco::UTF32::queryConvert() may return a negative integer if a UTF-32 byte sequence evaluates to a value of 0x80000000 or higher. This is fixed in 1.11.8p2, 1.12.5p2, and 1.13.0.

Related CVEs

Other vulnerabilities affecting the same vendor(s)