CISA Adds Actively Exploited ConnectWise and Windows Flaws to KEV

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Tuesday added two security flaws impacting ConnectWise ScreenConnect and Microsoft Windows to its Known Exploited Vulnerabilities (KEV) catalog, based on evidence of active exploitation.

The vulnerabilities are listed below –

• CVE-2024-1708 (CVSS score: 8.4) – A path traversal vulnerability in  ConnectWise ScreenConnect that could allow an attacker to execute remote code or directly impact confidential data and critical systems. (Fixed in February 2024)
• CVE-2026-32202 (CVSS score: 4.3) – A protection mechanism failure vulnerability in  Microsoft Windows Shell that could allow an unauthorized attacker to perform spoofing over a network. (Fixed in April 2026)

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The addition of CVE-2026-32202 to the KEV catalog comes a day after Microsoft updated its advisory for the flaw to acknowledge it had come under active exploitation.

Although Microsoft has not disclosed the nature of the attacks weaponizing the flaw, Akamai said the vulnerability stemmed from an incomplete patch for CVE-2026-21510, which was exploited as a zero-day alongside CVE-2026-21513 by the Russian hacking group APT28 in attacks targeting Ukraine and E.U. countries since December 2025.

Attacks exploiting CVE-2024-1708, on the other hand, have been chained with CVE-2024-1709 (CVSS score: 10.0), a critical authentication bypass vulnerability, by multiple threat actors over the years. Earlier this month, Microsoft linked the exploitation of the flaws to a China-based threat actor it tracks as Storm-1175 in attacks deploying Medusa ransomware.

It’s worth noting that CISA added CVE-2024-1709 to the KEV catalog on February 22, 2024. Federal Civilian Executive Branch (FCEB) agencies are required to apply the necessary fixes by May 12, 2026, to secure their networks.

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