Predictable SSLVPN Authentication Token in SonicWall SonicOS
CVE-2024-40762 is a vulnerability in SonicWall SonicOS affecting the SSLVPN authentication token generator. The issue is caused by use of a cryptographically weak pseudo-random number generator (PRNG), which can make system-generated authentication or cryptographic tokens predictable in certain cases. If an attacker can predict these SSLVPN authentication tokens, the attacker may be able to bypass authentication without possessing valid credentials. The available content identifies this specifically as a weakness in SonicOS SSLVPN authentication token generation and characterizes the flaw as an authentication bypass condition stemming from predictable token generation.
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Impact, mitigation & remediation
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Impact
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Mitigation
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Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Recent activity
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Unknown
A weak random number generator implementation in SonicWall firewalls that may allow prediction of system-generated cryptographic tokens and authentication bypass.
A vulnerability identified as CVE-2024-40762 affecting SonicWall SonicOS SSL-VPN, listed among the most commonly observed CVEs in Q4 2025 investigations.
The version that knows your environment.
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.