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CVE-2020-25259

31
FAUCET Score

CVE-2020-25259 is a critical vulnerability affecting multiple versions of Hyland OnBase, stemming from unsafe XML deserialization. This flaw allows an unauthenticated attacker to remotely execute arbitrary code with high impact on confidentiality, integrity, and availability. While there is no evidence of active exploitation or publicly available exploit code, the vulnerability has garnered significant community attention with numerous discussions, indicating potential interest from threat actors.

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
1.42%
Probability of exploitation in next 30 days
EPSS Percentile
70.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0142 is in the 57th percentile among its peer group of 36,835 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/22
Mailing ListThird Party Advisory