CISA Adds 5 Actively Exploited Artifactory, ScreenConnect, and RouterOS Flaws to KEV
Vulnerability: CISA adds five actively exploited vulnerabilities in Artifactory, ScreenConnect, and RouterOS to its KEV catalog.
Deep Analysis and Expert Commentary
The vulnerabilities span multiple critical systems, with JFrog Artifactory flaws (CVE-2026-42016, CVE-2026-42018) allowing privilege escalation and sensitive data leakage. ConnectWise ScreenConnect's CVE-2026-84869 enables unauthorized file transfer and execution, while MikroTik RouterOS flaws (CVE-2026-67277, CVE-2026-86060) permit kernel memory disclosure and privilege escalation. Attackers are chaining these vulnerabilities to bypass authentication and establish persistence, as seen in recent campaigns deploying backdoors and malicious scripts. Mitigation requires immediate patching, with federal agencies given strict deadlines. Organizations should also monitor for suspicious activity and restrict anonymous access where possible.
Action Items
- Patch affected systems immediately, prioritizing Artifactory, ScreenConnect, and RouterOS vulnerabilities.
- Monitor for unusual activity, such as unauthorized file transfers or new administrator accounts.
- Disable anonymous access and enforce strict authentication controls on Artifactory instances.
Original Article Brief Intro
The Hacker News · 2026-09-12 · Vulnerability: CISA adds five actively exploited vulnerabilities in Artifactory, ScreenConnect, and RouterOS to its KEV catalog.
Related Terms and Notes
CVE IDs
- CVE-2026-42016 — Incorrect authorization vulnerability in JFrog Artifactory leading to privilege escalation.
- CVE-2026-84869 — Improper privilege management in ConnectWise ScreenConnect allowing unauthorized file transfer and execution.
Techniques / TTPs
- Privilege Escalation
- RCE
Context Notes
- CISA
- ConnectWise ScreenConnect
- CVE
- Exploit Chain
- JFrog Artifactory
- KEV
- Known Exploited Vulnerabilities
- MikroTik RouterOS