synced 1 MIN AGO
01 Record

CVE-2025-3935

ScreenConnect Exposure to ASP.NET ViewState Code Injection

HighKEVPUBLISHEDCNA: ConnectWise
CNA base score8.1 CVSS v3.xCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

02 Description

ScreenConnect Exposure to ASP.NET ViewState Code Injection

03 Exploitation and scoring

Exploitation
Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2025-06-02. Federal remediation due 2025-06-23.
SSVC decision
  • ExploitationactiveCISA reports credible evidence of active exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
3.59% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 89.3% of scored records. A rank, not a probability.
NVD base score
7.2 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Analyzed. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2025-04-25 18:27Z1 YR AGO
Last updated
2026-02-26 18:28Z8 MO AGO
Reserved
2025-04-25
Assigning CNA
ConnectWise
Record state
PUBLISHED
Severity
High (CVSS 8.1)
CNA CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
  • CWE-502Deserialization of Untrusted DataBase
Data version
5.2
Document digest
ec0f7dc5fb5b107c78080903a3ad554fc57b0943b7e40b08c693335b8e5ee553

05 Affected products

VendorProductVersionsPlatforms
ConnectWiseScreenConnect<25.2.3Microsoft ASP.NET

06 References

07 Remediation

Cloud: No action is required. On-premises: Upgrade to the latest stable version. Details and guidance can be found here: ScreenConnect 25.2.4 Security Patch https://www.connectwise.com/company/trust/security-bulletins/screenconnect-security-patch-2025.4