CVE-2026-3564
ScreenConnect Instance Level Cryptographic Material Exposure
Description
A condition in ScreenConnect may allow an actor with access to server-level cryptographic material used for authentication to obtain unauthorized access, including elevated privileges, in certain scenarios.
INFO
Published Date :
March 17, 2026, 3:16 p.m.
Last Modified :
March 18, 2026, 2:52 p.m.
Remotely Exploit :
Yes !
Source :
7d616e1a-3288-43b1-a0dd-0a65d3e70a49
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | 7d616e1a-3288-43b1-a0dd-0a65d3e70a49 |
Solution
- Restrict access to cryptographic material.
- Review authentication configurations.
- Apply security updates promptly.
- Monitor for suspicious activity.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-3564.
| URL | Resource |
|---|---|
| https://www.connectwise.com/company/trust/security-bulletins/2026-03-17-screenconnect-bulletin |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-3564 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-3564
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-3564 vulnerability anywhere in the article.
-
The Hacker News
⚡ Weekly Recap: CI/CD Backdoor, FBI Buys Location Data, WhatsApp Ditches Numbers & More
Another week, another reminder that the internet is still a mess. Systems people thought were secure are being broken in simple ways, showing many still ignore basic advisories. This edition covers a ... Read more
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Help Net Security
Week in review: ScreenConnect servers open to attack, exploited Microsoft SharePoint flaw
Here’s an overview of some of last week’s most interesting news, articles, interviews and videos: What smart factories keep getting wrong about cybersecurity In this Help Net Security interview, Packs ... Read more
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Daily CyberSecurity
High-Severity ingress-nginx Flaw Exposes Kubernetes Secrets
A high-severity security flaw has been identified in ingress-nginx, a widely used Ingress controller for Kubernetes clusters. The vulnerability, tracked as CVE-2026-4342 with a CVSS score of 8.8, coul ... Read more
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Help Net Security
Unpatched ScreenConnect servers open to attack (CVE-2026-3564)
ConnectWise has patched a critical vulnerability (CVE-2026-3564) that could enable attackers to hijack ScreenConnect sessions by abusing ASP.NET machine keys to forge trusted authentication. About CVE ... Read more
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CybersecurityNews
ScreenConnect Vulnerability Allows Hackers to Extract Unique Machine Keys and Hijack Sessions
ConnectWise has issued an urgent security advisory for its ScreenConnect remote desktop software, disclosing a critical cryptographic vulnerability that could allow unauthenticated attackers to extrac ... Read more
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Daily CyberSecurity
Leaving the Doors Unlocked: Critical 9.0 CVSS ScreenConnect Flaw Exposes Machine Keys
ConnectWise recently issued a critical security update for its ScreenConnect platform, addressing a significant vulnerability that could have allowed unauthorized actors to hijack server-level cryptog ... Read more
The following table lists the changes that have been made to the
CVE-2026-3564 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 7d616e1a-3288-43b1-a0dd-0a65d3e70a49
Mar. 17, 2026
Action Type Old Value New Value Added Description A condition in ScreenConnect may allow an actor with access to server-level cryptographic material used for authentication to obtain unauthorized access, including elevated privileges, in certain scenarios. Added CVSS V3.1 AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H Added CWE CWE-347 Added Reference https://www.connectwise.com/company/trust/security-bulletins/2026-03-17-screenconnect-bulletin