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CVE-2025-40601 is a stack-based buffer overflow in the SonicWall SonicOS SSLVPN service. The flaw affects Gen7 and Gen8 SonicWall firewalls, including hardware and virtual platforms, and can be triggered remotely without authentication against exposed SSLVPN functionality. Successful exploitation causes the affected firewall to crash, resulting in a denial-of-service condition. Available reporting indicates the issue is limited to the SonicOS SSLVPN interface or service when that feature is enabled, and there is no confirmed indication that the vulnerability enables remote code execution or data exposure.
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What an attacker gets, and what they’ve been doing with it.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
23 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability in SonicWall SonicOS. Details not specified in the content, but it is listed as a serious security flaw for the week.
Stack-based buffer overflow in SonicOS SSLVPN service that can be exploited remotely without authentication to cause a denial-of-service (firewall crash) when SSLVPN is enabled.
A stack-based buffer overflow vulnerability in the SonicOS SSLVPN service of SonicWall Gen7 and Gen8 firewalls, allowing remote, unauthenticated attackers to crash the device and cause a Denial-of-Service (DoS).
A high-severity stack-based buffer overflow in the SonicOS SSLVPN service that allows a remote unauthenticated attacker to trigger a denial-of-service condition (firewall crash).
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.