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CVE-2025-14265 is a critical issue in the ScreenConnect server extension subsystem affecting ScreenConnect versions prior to 25.8. Due to insufficient server-side validation and integrity checking during extension installation, an authorized or administrative user can install and execute untrusted or arbitrary extensions. This can be abused to run custom code on the ScreenConnect server and/or access sensitive application configuration data. The issue impacts only the ScreenConnect server component; host and guest clients are not affected. ScreenConnect 25.8 introduces strengthened server-side configuration handling and integrity checks intended to ensure only trusted extensions can be installed.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
14 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Unknown (mentioned only as a related post title; no technical details provided in the content).
A vulnerability in ConnectWise ScreenConnect. No further details provided in the content.
A critical vulnerability in ConnectWise ScreenConnect server allowing attackers to expose configuration data and install untrusted extensions due to weak code integrity checks.
A critical vulnerability in ConnectWise ScreenConnect server (CVE-2025-14265) allows attackers with administrative access to expose sensitive configuration data and install untrusted extensions due to improper code integrity validation during extension installations.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.