Hyland OnBase up to 24.0 Hyland.Core.Timers.dll deserialization

CVSS Meta Temp Score
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CTI Interest Score
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9.4$0-$5k0.00

Summaryinfo

A vulnerability described as very critical has been identified in Hyland OnBase up to 24.0. The affected element is an unknown function in the library Hyland.Core.Timers.dll. Executing a manipulation can lead to deserialization. This vulnerability is handled as CVE-2025-34153. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as very critical was found in Hyland OnBase up to 24.0. This vulnerability affects an unknown code block in the library Hyland.Core.Timers.dll. The manipulation with an unknown input leads to a deserialization vulnerability. The CWE definition for the vulnerability is CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Hyland OnBase versions prior to 17.0.2.87 (other versions may be affected) are vulnerable to unauthenticated remote code execution via insecure deserialization on the .NET Remoting TCP channel. The service registers a listener on port 6031 with the URI endpoint TimerServer, implemented in Hyland.Core.Timers.dll. This endpoint deserializes untrusted input using the .NET BinaryFormatter, allowing attackers to execute arbitrary code under the context of NT AUTHORITY\SYSTEM.

The weakness was released by Victor Morales. The advisory is shared for download at gist.github.com. This vulnerability was named CVE-2025-34153 since 04/15/2025. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 02/14/2026).

Upgrading to version 17.0.2.87 or 24.1 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.4

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Deserialization
CWE: CWE-502 / CWE-20
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: OnBase 17.0.2.87/24.1

Timelineinfo

04/15/2025 CVE reserved
08/13/2025 +120 days Advisory disclosed
08/13/2025 +0 days VulDB entry created
02/14/2026 +185 days VulDB entry last update

Sourcesinfo

Advisory: gist.github.com
Researcher: Victor Morales
Status: Confirmed

CVE: CVE-2025-34153 (🔒)
GCVE (CVE): GCVE-0-2025-34153
GCVE (VulDB): GCVE-100-319996

Entryinfo

Created: 08/13/2025 20:38
Updated: 02/14/2026 01:25
Changes: 08/13/2025 20:38 (67), 02/14/2026 01:25 (1)
Complete: 🔍
Cache ID: 216::103

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