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CVE-2020-28944

23
FAUCET Score

CVE-2020-28944 is a Denial of Service vulnerability affecting OX Guard versions 2.10.4 and earlier. An unauthenticated attacker can exploit this by interacting with a WKS server that responds slowly or with excessive data, leading to resource exhaustion. With a CVSS score of 7.5 (High), this vulnerability is remotely exploitable with low attack complexity and no user interaction required, resulting in a complete loss of availability. Currently, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.10.4CPE matchmatch criteria
cpe:2.3:a:open-xchange:ox_guard:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.57%
Probability of exploitation in next 30 days
EPSS Percentile
72.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0157 is in the 55th percentile among its peer group of 51,553 CVEs.

Social Chatter

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.

Media 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

Remediation records are not available for this CVE.

References

packetstormsecurity.com / files/162406/OX-App-Suite-OX-Guard-SSRF-DoS-Cross-Site-Scripting.html
Third Party AdvisoryVDB Entry
open-xchange.com
Vendor Advisory