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Case File

CVE-2021-21829

CRITICAL · CVSS 9.8 EPSS 2.54% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-08-13 · Last synced 2026-08-04

CyberRota Analysis

AI analysis pending.

Public Exploit Signal

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

Detected Signals
remote code execution code execution

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

CVE
CVE-2021-21829
Severity
CRITICAL
CVSS
9.8
EPSS
2.54%

Original NVD Description

A heap-based buffer overflow vulnerability exists in the XML Decompression EnumerationUncompressor::UncompressItem functionality of AT&T Labs’ Xmill 0.7. A specially crafted XMI file can lead to remote code execution. An attacker can provide a malicious file to trigger this vulnerability.