---
title: SonicWall Confirms No New SSL VPN Zero-Day — Ransomware Attack Linked to Old Vulnerability
description: SonicWall urges updating credentials and using SonicOS 7.3.0 after ransomware exploits old CVE flaw in SSLVPN products.
canonical_url: https://codekeeper.co/ticker/sonicwall-urges-updating-credentials-to-prevent-ransomware
---

[Ransomware](https://codekeeper.co/ticker/tag/ransomware)

# SonicWall Confirms No New SSL VPN Zero-Day — Ransomware Attack Linked to Old Vulnerability

SonicWall urges updating credentials and using SonicOS 7.3.0 after ransomware exploits old CVE flaw in SSLVPN products.

![Content Team](https://codekeeper.co/hubfs/_sized/Codekeeper_21_beeldmerkL-800.png)

By Content Team Aug 7, 2025

Share [![Share on facebook](https://codekeeper.co/hubfs/Codekeeper%202025/Icons/Blog%20-%20Facebook.svg)](http://www.facebook.com/share.php?u=https%3A%2F%2Fcodekeeper.co%2Fticker%2Fsonicwall-urges-updating-credentials-to-prevent-ransomware%3Futm_medium%3Dsocial%26utm_source%3Dfacebook) [![Share on linkedin](https://codekeeper.co/hubfs/Codekeeper%202025/Icons/Blog%20-%20Linkedin.svg)](http://www.linkedin.com/shareArticle?mini=true&url=https%3A%2F%2Fcodekeeper.co%2Fticker%2Fsonicwall-urges-updating-credentials-to-prevent-ransomware%3Futm_medium%3Dsocial%26utm_source%3Dlinkedin) [![Share on twitter](https://codekeeper.co/hubfs/Codekeeper%202025/Icons/Blog%20-%20X.svg)](https://twitter.com/intent/tweet?original_referer=https%3A%2F%2Fcodekeeper.co%2Fticker%2Fsonicwall-urges-updating-credentials-to-prevent-ransomware%3Futm_medium%3Dsocial%26utm_source%3Dtwitter&url=https%3A%2F%2Fcodekeeper.co%2Fticker%2Fsonicwall-urges-updating-credentials-to-prevent-ransomware%3Futm_medium%3Dsocial%26utm_source%3Dtwitter&source=tweetbutton&text=) [![Share on email](https://codekeeper.co/hubfs/Codekeeper%202025/Icons/Blog%20-%20Mail.svg)](mailto:?subject=Check%20out%20https%3A%2F%2Fcodekeeper.co%2Fticker%2Fsonicwall-urges-updating-credentials-to-prevent-ransomware%3Futm_medium%3Dsocial%26utm_source%3Demail%20&body=Check%20out%20https%3A%2F%2Fcodekeeper.co%2Fticker%2Fsonicwall-urges-updating-credentials-to-prevent-ransomware%3Futm_medium%3Dsocial%26utm_source%3Demail) ![Copy link](https://codekeeper.co/hubfs/Codekeeper%202025/Icons/Blog%20-%20Copy.svg)

ON THIS PAGE

### Want more insights like this?

Subscribe to our newsletter to get the latest software protection strategies delivered to your inbox.

By submitting your email, you consent to Codekeeper contacting you and agree to our [privacy policy](https://codekeeper.co/privacy-policy) .

SonicWall has confirmed that recent ransomware attacks targeting its SSL VPN products weren't caused by a new zero-day vulnerability, but rather were the result of attackers exploiting the previously patched CVE-2024-40766 flaw. The attacks affected fewer than 40 customers and appear linked to legacy credentials left over during migrations from Generation 6 to Generation 7 firewalls. Attackers exploited outdated or weak credentials that weren't updated during hardware upgrades. SonicWall is urging customers to immediately change their credentials and upgrade to SonicOS 7.3.0, which includes enhanced multi-factor authentication, login attempt lockouts, and stronger password policies to prevent future attacks. Source: [Cyber Security News](https://cybersecuritynews.com/sonicwall-no-new-sslvpn-0-day/)

Share this article [![Share on facebook](https://codekeeper.co/hubfs/Codekeeper%202025/Icons/Blog%20-%20Facebook.svg)](http://www.facebook.com/share.php?u=https%3A%2F%2Fcodekeeper.co%2Fticker%2Fsonicwall-urges-updating-credentials-to-prevent-ransomware%3Futm_medium%3Dsocial%26utm_source%3Dfacebook) [![Share on linkedin](https://codekeeper.co/hubfs/Codekeeper%202025/Icons/Blog%20-%20Linkedin.svg)](http://www.linkedin.com/shareArticle?mini=true&url=https%3A%2F%2Fcodekeeper.co%2Fticker%2Fsonicwall-urges-updating-credentials-to-prevent-ransomware%3Futm_medium%3Dsocial%26utm_source%3Dlinkedin) [![Share on twitter](https://codekeeper.co/hubfs/Codekeeper%202025/Icons/Blog%20-%20X.svg)](https://twitter.com/intent/tweet?original_referer=https%3A%2F%2Fcodekeeper.co%2Fticker%2Fsonicwall-urges-updating-credentials-to-prevent-ransomware%3Futm_medium%3Dsocial%26utm_source%3Dtwitter&url=https%3A%2F%2Fcodekeeper.co%2Fticker%2Fsonicwall-urges-updating-credentials-to-prevent-ransomware%3Futm_medium%3Dsocial%26utm_source%3Dtwitter&source=tweetbutton&text=) [![Share on email](https://codekeeper.co/hubfs/Codekeeper%202025/Icons/Blog%20-%20Mail.svg)](mailto:?subject=Check%20out%20https%3A%2F%2Fcodekeeper.co%2Fticker%2Fsonicwall-urges-updating-credentials-to-prevent-ransomware%3Futm_medium%3Dsocial%26utm_source%3Demail%20&body=Check%20out%20https%3A%2F%2Fcodekeeper.co%2Fticker%2Fsonicwall-urges-updating-credentials-to-prevent-ransomware%3Futm_medium%3Dsocial%26utm_source%3Demail) ![Copy link](https://codekeeper.co/hubfs/Codekeeper%202025/Icons/Blog%20-%20Copy.svg)

![blog_book_a_demo_cta_3x](https://codekeeper.co/hubfs/_sized/Codekeeper%202025/blog_book_a_demo_cta_3x-768x512.webp)

Have questions about protecting your software?

Our escrow experts are standing by to help.

[Book a free demo](https://codekeeper.co/book-a-demo)

YOU MAY ALSO LIKE

[Cyberattacks Chick-fil-A Says Cyberattack May Have Exposed Loyalty Account Data Sep 2, 2026](https://codekeeper.co/ticker/chick-fil-a-loyalty-account-breach)

[Malware Can Hijack Windows Hello Keys to Break Into Microsoft Cloud Accounts Aug 11, 2026](https://codekeeper.co/ticker/malware-abuses-windows-hello-for-entra-id-access)

[Cyberattacks Clop Hackers Strike Again, Targeting PTC Software Used by Major Manufacturers Aug 20, 2026](https://codekeeper.co/ticker/clop-exploits-windchill-zero-day)

[CISA Warns of Actively Exploited Zero-Day in Cisco Firewall Management Center Aug 11, 2026](https://codekeeper.co/ticker/cisa-warns-zero-day-flaw-cisco-fmc)