CVE-2026-33824, CVE-2026-55040, CVE-2026-59310, CVE-2026-65400: Microsoft, VMware, Apple — Remote Takeover, RCE, Bypass (June 2024)

CVE-2026-33824, CVE-2026-55040, CVE-2026-59310, CVE-2026-65400 — Microsoft, VMware, Apple

Four critical vulnerabilities—CVE-2026-33824, CVE-2026-55040, CVE-2026-59310, and CVE-2026-65400—impact Microsoft, VMware, and Apple products. All are rated critical and are confirmed as actively exploited in the wild. Attackers are leveraging these flaws for remote code execution, authentication bypass, and full device takeover across enterprise environments.

Attack Vector

Threat actors, including a Chinese-speaking adversary, exploit these vulnerabilities remotely to bypass authentication and execute arbitrary code. Techniques observed include deploying open source SSH reverse shells, gaining root access, and installing Monero cryptocurrency miners. No user interaction is required; exploitation is possible over the network against unpatched systems. Indicators of compromise include unauthorized SSH connections, unexpected root-level processes, and outbound connections to known cryptominer pools.

Who Is at Risk

All organizations running affected Microsoft, VMware, and Apple enterprise products are at risk. Exploitation has been confirmed in North America, targeting both on-premises and cloud deployments. Enterprises with exposed management interfaces or outdated patch levels are especially vulnerable.

Patch & Mitigate

• Patch: Apply vendor patches for Microsoft, VMware, and Apple products immediately. Refer to vendor advisories for exact versions. CISA recommends patching without delay.
• Workaround: No reliable workaround is available; patching is mandatory.
• Detect: Monitor for unauthorized SSH access, new privileged accounts, root-level process creation, and outbound traffic to cryptominer infrastructure. Review authentication logs for anomalies.

MITRE ATT&CK

• TA0001 — Initial Access: Attackers exploit exposed services to gain a foothold.
• TA0006 — Credential Access: Authentication bypass enables adversaries to escalate privileges.
• TA0007 — Discovery: Post-exploitation, attackers enumerate the environment for lateral movement and persistence.

Source: https://www.securityweek.com/cisa-urges-immediate-patching-of-exploited-microsoft-vmware-apple-vulnerabilities/