CVE-2021-21828 is a critical heap-based buffer overflow vulnerability in the XML Decompression DecodeTreeBlock functionality of AT&T Labs Xmill 0.7. An attacker can trigger this flaw by providing a specially crafted malicious file, leading to severe consequences. With a CVSS score of 9.8 (CRITICAL), this vulnerability is remotely exploitable without user interaction, allowing for complete compromise of confidentiality, integrity, and availability. While there is no evidence of active exploitation, public exploit code, or KEV listing, the vulnerability has garnered significant community discussion, indicating awareness among security researchers.
| 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.