Critical severity9.8NVD Advisory· Published Aug 20, 2021· Updated Jun 17, 2026
CVE-2021-21827
CVE-2021-21827
Description
A heap-based buffer overflow vulnerability exists in the XML Decompression DecodeTreeBlock functionality of AT&T Labs Xmill 0.7. Within DecodeTreeBlock which is called during the decompression of an XMI file, a UINT32 is loaded from the file and used as trusted input as the length of a buffer. An attacker can provide a malicious file to trigger this vulnerability.
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Affected products
2Patches
Vulnerability mechanics
References
1- talosintelligence.com/vulnerability_reports/TALOS-2021-1291nvdExploitThird Party Advisory
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