--- title: "CERT Advisory Symantec and Norton Critical Vulnerability | DuoCircle" description: "All Symantec and Norton branded antivirus products Symantec and Norton branded antivirus products contain multiple vulnerabilities." image: "https://www.duocircle.com/images/og-default.png" canonical: "https://www.duocircle.com/blog/spam-filtering/cert-advisory-symantec-norton-critical-vulnerability/" --- Quick Answer US-CERT advisory TA16-187A reported multiple critical vulnerabilities affecting all Symantec and Norton-branded antivirus products. The vulnerabilities allow a remote attacker to take control of an affected system. The products are widely deployed across government and enterprise environments. DuoCircle does not use Symantec or Norton antivirus in its spam filtering array, so customers using DuoCircle's filtering are not exposed through that vector. Share [ ](https://www.linkedin.com/sharing/share-offsite/?url=undefined%2Fblog%2Fspam-filtering%2Fcert-advisory-symantec-norton-critical-vulnerability%2F "Share on LinkedIn") [ ](https://twitter.com/intent/tweet?text=CERT%20Advisory%20Symantec%20and%20Norton%20Critical%20Vulnerability&url=undefined%2Fblog%2Fspam-filtering%2Fcert-advisory-symantec-norton-critical-vulnerability%2F "Share on X/Twitter") [ ](https://www.facebook.com/sharer/sharer.php?u=undefined%2Fblog%2Fspam-filtering%2Fcert-advisory-symantec-norton-critical-vulnerability%2F "Share on Facebook") [ ](https://reddit.com/submit?url=undefined%2Fblog%2Fspam-filtering%2Fcert-advisory-symantec-norton-critical-vulnerability%2F&title=CERT%20Advisory%20Symantec%20and%20Norton%20Critical%20Vulnerability "Share on Reddit") [ ](mailto:?subject=CERT%20Advisory%20Symantec%20and%20Norton%20Critical%20Vulnerability&body=Check out this article: undefined%2Fblog%2Fspam-filtering%2Fcert-advisory-symantec-norton-critical-vulnerability%2F "Share via Email") ![CERT Advisory Symantec and Norton Critical Vulnerability](https://media.mailhop.org/duocircle/images/stock/spam-filtering.jpg) **Systems Affected** All Symantec and Norton branded antivirus products **Overview** Symantec and Norton branded antivirus products contain multiple vulnerabilities. Some of these products are in widespread use throughout government and industry. Exploitation of these vulnerabilities could allow a remote attacker to take control of an affected system. **Impact** DuoCircle **does not use Symantec or Norton Antivirus** in our spam filtering array. ![Brad Slavin](https://media.mailhop.org/dmarcreport/images/team/brad-slavin.jpg) Brad Slavin General Manager General Manager at DuoCircle. Product strategy and commercial lead across the email security portfolio. ## Secure your email infrastructure Protect, authenticate, and deliver. Contact our team to find the right solution. [Contact Sales](/contact/) [Explore Products](/products/) ## Related Articles [ Spam Filtering 5m A Guide On Email Gateway: What It Is And The Importance Of A Secure Email Gateway Mar 4, 2021 ](/blog/spam-filtering/a-guide-on-email-gateway-what-it-is-and-the-importance-of-a-secure-email-gateway/)[ Spam Filtering 5m Anti-Spam Filters and How They Work Jun 19, 2020 ](/blog/spam-filtering/anti-spam-filters-and-how-they-work/)[ Spam Filtering 3m Cloud-Based Spam Filtering Protects Your Company Sep 10, 2018 ](/blog/spam-filtering/cloud-based-spam-filtering-protects-your-company/)[ Spam Filtering 2m Custom Spam levels Jun 5, 2015 ](/blog/spam-filtering/custom-spam-levels/) ```json {"@context":"https://schema.org","@type":"Organization","name":"DuoCircle LLC","url":"https://www.duocircle.com","logo":{"@type":"ImageObject","url":"https://www.duocircle.com/images/duocircle-logo.png"},"description":"DuoCircle is a portfolio of specialized email products covering protection, authentication, delivery, and routing. 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