--- title: Palo Alto Networks zero-day exploited since March to... description: Suspected state-sponsored hackers have been exploiting a zero-day vulnerability in Palo Alto Networks firewalls since March to breach internal networks and... canonical: https://daily.dev/posts/palo-alto-networks-zero-day-exploited-since-march-to-backdoor-firewalls-ezloifisx twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Palo Alto Networks zero-day exploited since March to backdoor firewalls | daily.dev og:description: Suspected state-sponsored hackers have been exploiting a zero-day vulnerability in Palo Alto Networks firewalls since March to breach internal networks and... og:url: https://daily.dev/posts/palo-alto-networks-zero-day-exploited-since-march-to-backdoor-firewalls-ezloifisx og:image: https://api.daily.dev/og/posts/ezloIFIsx.png og:image:alt: Palo Alto Networks zero-day exploited since March to backdoor firewalls og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Palo Alto Networks zero-day exploited since March to backdoor firewalls **[Lobsters](https://daily.dev/sources/lobsters)** · 5 min read · 1 upvotes · 0 comments ## Summary Suspected state-sponsored hackers have been exploiting a zero-day vulnerability in Palo Alto Networks firewalls since March to breach internal networks and steal data. The vulnerability is tracked as CVE-2024-3400. Palo Alto Networks has released mitigations and patches on April 14. The threat actors have been using a custom backdoor named 'Upstyle' to execute commands on compromised devices. Detecting a compromised Palo Alto Networks firewall can be done by generating a Tech Support File or monitoring network activity. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#zero-day](https://daily.dev/tags/zero-day) [View this post on daily.dev](https://daily.dev/posts/palo-alto-networks-zero-day-exploited-since-march-to-backdoor-firewalls-ezloifisx) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Palo Alto Networks zero-day exploited since March to backdoor firewalls","url":"https://daily.dev/posts/palo-alto-networks-zero-day-exploited-since-march-to-backdoor-firewalls-ezloifisx","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/palo-alto-networks-zero-day-exploited-since-march-to-backdoor-firewalls-ezloifisx"},"datePublished":"2024-04-17T17:35:19.218Z","dateModified":"2024-05-09T08:39:06.345Z","description":"Suspected state-sponsored hackers have been exploiting a zero-day vulnerability in Palo Alto Networks firewalls since March to breach internal networks and...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/d3ada17181ed59917b8d74ec3c64ab26?_a=AQAEufR","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/d3ada17181ed59917b8d74ec3c64ab26?_a=AQAEufR","isAccessibleForFree":true,"articleSection":"Lobsters","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Lobsters","logo":"https://media.daily.dev/image/upload/s--tl8v_Fku--/f_auto,t_logo/v1698841318/logos/lobste.jpg","url":"https://daily.dev/sources/lobsters"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/palo-alto-networks-zero-day-exploited-since-march-to-backdoor-firewalls-ezloifisx","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":1},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"zero-day","timeRequired":"PT5M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Lobsters","item":"https://daily.dev/sources/lobsters"},{"@type":"ListItem","position":3,"name":"Palo Alto Networks zero-day exploited since March to backdoor firewalls"}]} ```