CVE-2021-21829 is a critical heap-based buffer overflow vulnerability affecting AT&T Labs’ Xmill 0.7, specifically within the XML Decompression EnumerationUncompressor::UncompressItem functionality. This flaw allows an unauthenticated attacker to achieve remote code execution by providing a specially crafted XMI file. With a CVSS score of 9.8, this vulnerability poses a severe risk due to its network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. Despite its critical severity, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
0.7CPE matchmatch criteria | cpe:2.3:a:att:xmill:0.7:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.