CVE-2024-40762Network attack vector

Authentication bypass via predictable SSLVPN tokens

Published Jan 9, 2025 · Updated Jan 9, 2025

Authentication bypass in affected SonicWall SonicOS builds allows remote attackers to predict SSLVPN authentication tokens. The SSLVPN authentication token generator uses a cryptographically weak pseudorandom number generator, making issued tokens predictable in certain cases. Reachability requires SSLVPN to be enabled and user interaction; successful prediction bypasses the token-based authentication gate.

CVSS severity7.1
High
EPSS probability1.04%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in affected SonicWall SonicOS builds allows remote attackers to predict SSLVPN authentication tokens. The SSLVPN authentication token generator uses a cryptographically weak pseudorandom number generator, making issued tokens predictable in certain cases. Reachability requires SSLVPN to be enabled and user interaction; successful prediction bypasses the token-based authentication gate.

The record

CVE
CVE-2024-40762
Published
Jan 9, 2025
Updated
Jan 9, 2025
Vendor
SonicWall
Product
SonicOS
Classifications
CWE-338, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 9, 2025CVE publishedPublication date reported by the CVE source.
  2. Jan 9, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=7.1.1-7058 and older versions
  2. Affected versionversion=7.1.2-7019
  3. Affected versionversion=8.0.0-8035

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SonicWall · SonicOSversion=7.1.1-7058 and older versions; version=7.1.2-7019; version=8.0.0-8035

Published CVSS scores

7.1SonicWallCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-338Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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