Critical

Volexity Uncovers Zero-Day Campaign Targeting SonicWall VPN Appliances

Security Affairs

July 20, 2026 at 7:29 AM

Actively Exploited

Overview

Volexity has reported that unknown hackers exploited two zero-day vulnerabilities in SonicWall SMA 1000 series VPN appliances, gaining root access to these devices before any patches became available. This attack began on June 22, 2026, targeting organizations using the affected SonicWall devices. The incident was part of a broader campaign that allowed the attackers to infiltrate networks, raising significant security concerns for businesses relying on these VPN appliances for secure remote access. The discovery emphasizes the need for companies to stay vigilant and ensure their systems are updated to protect against such unforeseen exploits.

Key Takeaways

Active Exploitation: This vulnerability is being actively exploited by attackers. Immediate action is recommended.
Affected Systems: SonicWall SMA 1000 series VPN appliances
Action Required: Organizations should immediately apply any patches released by SonicWall for the SMA 1000 series.
Timeline: Ongoing since June 22, 2026

Original Article Summary

Unknown hackers exploited two SonicWall SMA 1000 zero-days to gain root access on VPN appliances before patches became available. Volexity published its findings after conducting an incident response investigation involving a compromised organization whose SonicWall SMA 1000 series VPN appliances were hit with zero-day exploits starting June 22, 2026. The threat actor, which Volexity tracks […]

Impact

SonicWall SMA 1000 series VPN appliances

Exploitation Status

This vulnerability is confirmed to be actively exploited by attackers in real-world attacks. Organizations should prioritize patching or implementing workarounds immediately.

Timeline

Ongoing since June 22, 2026

Remediation

Organizations should immediately apply any patches released by SonicWall for the SMA 1000 series. Regularly update devices and review security configurations to close any potential gaps. Implement additional network monitoring to detect any unauthorized access attempts.

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to Zero-day.

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