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CVE-2020-25257

30
FAUCET Score

CVE-2020-25257 is a critical XML External Entity (XXE) vulnerability affecting multiple versions of Hyland OnBase, including 16.0.2.83 and below, 17.0.2.109 and below, 18.0.0.37 and below, 19.8.16.1000 and below, and 20.3.10.1000 and below. With a CVSS score of 9.8 (Critical), this vulnerability allows unauthenticated attackers to achieve full read/write access to arbitrary files on affected systems over the network with low attack complexity. Despite its high severity, there is currently no public exploit code available (Metasploit, Nuclei, ExploitDB), and it has not been added to CISA's KEV catalog, nor is there any significant community discussion or media coverage surrounding it.

Impacted Technologies

VendorProductVersion(s)CPE
<= 16.0.2.83CPE matchmatch criteria
cpe:2.3:a:hyland:onbase:*:*:*:*:*:*:*:*
>= 17.0.0.0, <= 17.0.2.109CPE matchmatch criteria
cpe:2.3:a:hyland:onbase:*:*:*:*:*:*:*:*
>= 18.0.0.0, <= 18.0.0.37CPE matchmatch criteria
cpe:2.3:a:hyland:onbase:*:*:*:*:*:*:*:*
>= 19.0.0.0, <= 19.8.16.1000CPE matchmatch criteria
cpe:2.3:a:hyland:onbase:*:*:*:*:*:*:*:*
>= 20.0.0.0, <= 20.3.10.1000CPE matchmatch criteria
cpe:2.3:a:hyland:onbase:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.21%
Probability of exploitation in next 30 days
EPSS Percentile
65.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0121 is in the 51st percentile among its peer group of 36,897 CVEs.

Social Chatter

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.

Media 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

Remediation records are not available for this CVE.

References

seclists.org / fulldisclosure/2020/Sep/23
Mailing ListThird Party Advisory