A condition in the ScreenConnect server component may allow an actor with access to server-level cryptographic material used for authentication to obtain unauthorized access, including elevated privileges, in certain scenarios. ScreenConnect host and guest client agents are not independently affected by this CVE.
CVE-2026-3564
CRITICALPre-NVD 9.09.0—Trending — 4 sources updated this week
EchelonGraph scoreMEDIUM confidence
Score 9.0 from GitHub Security Advisory (severity: CRITICAL) published 2026-03-17. the CNA's CVSS baseline 9.0; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: cna:connectwise, ghsa
9.0
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 9.0Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 9.0
- EG Score
- 9.0(medium)
- EPSS
- 28.3%
- KEV
- Not listed
Published
March 17, 2026
Last Modified
July 9, 2026
References (1)
- 7d616e1a-3288-43b1-a0dd-0a65d3e70a49https://www.connectwise.com/company/trust/security-bulletins/2026-03-17-screenconnect-bulletin
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 6× in last 7d / 6× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-12 05:46 UTCEPSS rescore
- 2026-07-11 08:27 UTCEPSS rescore
- 2026-07-09 19:10 UTCEPSS rescore
- 2026-07-09 17:57 UTCEG score recompute
- 2026-07-09 17:57 UTCGHSA enrichment
- 2026-07-09 17:56 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Same CWE
10 shownCWE-347
Frequently asked(5)
What is CVE-2026-3564?
CVE-2026-3564 is a critical vulnerability published on March 17, 2026. A condition in the ScreenConnect server component may allow an actor with access to server-level cryptographic material used for authentication to obtain unauthorized access, including elevated privileges, in certain scenarios. ScreenConnect host and guest client agents are not independently…
When was CVE-2026-3564 disclosed?
CVE-2026-3564 was first published in the National Vulnerability Database on March 17, 2026, with the most recent update on July 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-3564 actively exploited?
CVE-2026-3564 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 28.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-3564?
CVE-2026-3564 has a CVSS v3 base score of 9.0 (NVD).
How do I remediate CVE-2026-3564?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-3564, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-3564
Is Your Infrastructure Affected by CVE-2026-3564?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.