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CVE-2025-40601 is a stack-based buffer overflow in the SonicWall SonicOS SSLVPN service. The flaw is remotely reachable and does not require authentication. Successful exploitation can trigger a denial-of-service condition that crashes the affected firewall. The issue affects SonicOS 7.3.0-7012 and older releases, excluding the 7.0.1 branch, and SonicOS 8.0.2-8011 and older releases, and only applies when the SonicOS SSLVPN interface or service is enabled. Reported fixed versions include SonicOS 7.3.1-7013 and later for affected Gen7 platforms and 8.0.3-8011 and later for affected Gen8 platforms. Available reporting states SonicWall PSIRT was not aware of in-the-wild exploitation or a public proof of concept at the time of publication.
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No public exploit code observed for this vulnerability.
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22 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.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.