Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC PR UI S C I A CVSS EPSS %ile KEV N H N N U H H H 8.1 .0351 88.8 YES
AFFECTED Product Versions Fixed ScreenConnect <25.2.3 – —
TIMELINE Apr 25 Reserved by ConnectWise Apr 25 Published (CNA: ConnectWise) Jun 2 Added to CISA KEV, remediation due 2025-06-23
ScreenConnect versions 25.2.3 and earlier versions may be susceptible to a ViewState code injection attack. ASP.NET Web Forms use ViewState to preserve page and control state, with data encoded using Base64 protected by machine keys. It is important to note that to obtain these machine keys, privileged system level access must be obtained. If these machine keys are compromised, attackers could create and send a malicious ViewState to the website, potentially leading to remote code execution on the server. The risk does not originate from a vulnerability introduced by ScreenConnect, but from platform level behavior. This had no direct impact to ScreenConnect Client. ScreenConnect 2025.4 patch disables ViewState and removes any dependency on it.
| Date | Event | Detail |
|---|---|---|
| April 25, 2025 | Reserved | Reserved by ConnectWise |
| April 25, 2025 | Published | Published (CNA: ConnectWise) |
| June 2, 2025 | KEV ADDED | Added to CISA KEV, remediation due 2025-06-23 |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| ConnectWise | ScreenConnect | — | <25.2.3 | — |
Authoritative record: CVE-2025-3935 at cve.org
Vendors: connectwise
Weaknesses: CWE-502
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2025-3935 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
