CVE-2021-20838 describes an XML External Entity (XXE) vulnerability in Antenna House Office Server Document Converter versions V7.2MR4 and earlier, and V7.1MR7 and earlier. This flaw allows an unauthenticated remote attacker to trigger a denial of service (DoS) condition by submitting a specially crafted XML document. With a CVSS score of 7.5 (High), the attack requires no user interaction and has low complexity, making it a significant availability risk. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 5.2CPE matchmatch criteria | cpe:2.3:a:antennahouse:office_server_document_converter:*:*:*:*:*:*:*:* | ||
5.2CPE matchmatch criteria | cpe:2.3:a:antennahouse:office_server_document_converter:5.2:-:*:*:*:*:*:* | ||
6.0CPE matchmatch criteria | cpe:2.3:a:antennahouse:office_server_document_converter:6.0:-:*:*:*:*:*:* | ||
6.0CPE matchmatch criteria | cpe:2.3:a:antennahouse:office_server_document_converter:6.0:mr1:*:*:*:*:*:* | ||
6.0CPE matchmatch criteria | cpe:2.3:a:antennahouse:office_server_document_converter:6.0:mr2:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.