CVE•Published 2025-12-11•Modified 2026-10-07•1 article on news•5 live references•NVD data

CVE-2025-14265Connectwise · Screenconnect

Vulnerability data via NVD (ingested)

CVSS v3.1

9.1

CRITICAL

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

EPSS percentile

Exploit Prediction Scoring System · top 71% of all CVEs

Weaknesses (CWE)

CWE-494Download of Code Without Integrity Check

Description

In versions of ScreenConnect™ prior to 25.8, server-side validation and integrity checks within the extension subsystem could allow the installation and execution of untrusted or arbitrary extensions by authorized or administrative users. Abuse of this behavior could result in the execution of custom code on the server or unauthorized access to application configuration data. This issue affects only the ScreenConnect server component; host and guest clients are not impacted. ScreenConnect 25.8 introduces enhanced server-side configuration handling and integrity checks to ensure only trusted extensions can be installed.

Timeline

Published 2025-12-11

Modified 2026-10-07

External references

NVD MITRE Exploit-DB GitHub PoC VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag6,987 hosts

vuln:CVE-2025-14265

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Connectwise Screenconnect"

All exposed Connectwise Screenconnect instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Screenconnect"

HTTP body or banner mentions "Screenconnect" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2025-14265