{"id":10600,"date":"2026-02-12T10:03:47","date_gmt":"2026-02-12T10:03:47","guid":{"rendered":"https:\/\/serisec.com\/index.php\/2026\/02\/12\/palo-alto-networks-firewall-vulnerability-allows-an-attacker-to-force-firewalls-into-a-reboot-loop\/"},"modified":"2026-02-12T10:03:47","modified_gmt":"2026-02-12T10:03:47","slug":"palo-alto-networks-firewall-vulnerability-allows-an-attacker-to-force-firewalls-into-a-reboot-loop","status":"publish","type":"post","link":"https:\/\/serisec.com\/index.php\/2026\/02\/12\/palo-alto-networks-firewall-vulnerability-allows-an-attacker-to-force-firewalls-into-a-reboot-loop\/","title":{"rendered":"Palo Alto Networks Firewall Vulnerability Allows an Attacker to Force Firewalls into a Reboot Loop"},"content":{"rendered":"

Palo Alto Networks Firewall Vulnerability Allows an Attacker to Force Firewalls into a Reboot Loop
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A critical denial-of-service (DoS) flaw in Palo Alto Networks\u2019 PAN-OS software could let unauthenticated attackers crash firewalls<\/a> into endless reboot cycles, potentially crippling enterprise networks.<\/p>\n

Dubbed CVE-2026-0229, the vulnerability lurks in the Advanced DNS Security (ADNS) feature. An attacker sends a maliciously crafted packet to trigger a system reboot.<\/p>\n

Repeated exploitation forces the firewall into maintenance mode, halting traffic inspection and exposing organizations to outages. Cloud NGFW and Prisma Access remain unaffected.<\/p>\n

Palo Alto Networks detailed the issue in a security advisory, confirming that it affects only specific PAN-OS versions when ADNS is enabled alongside a spyware profile set to block, sinkhole, or alert traffic.<\/p>\n

Affected Versions and Fixes<\/strong><\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n
Product<\/th>\nAffected Versions<\/th>\nFixed Versions<\/th>\n<\/tr>\n<\/thead>\n
PAN-OS 12.1<\/td>\n< 12.1.4 (specifically 12.1.2\u201312.1.3)<\/td>\n\u2265 12.1.4<\/td>\n<\/tr>\n
PAN-OS 11.2<\/td>\n< 11.2.10 (11.2.0\u201311.2.9)<\/td>\n\u2265 11.2.10<\/td>\n<\/tr>\n
PAN-OS 11.1<\/td>\nNone<\/td>\nAll<\/td>\n<\/tr>\n
PAN-OS 10.2<\/td>\nNone<\/td>\nAll<\/td>\n<\/tr>\n
Cloud NGFW<\/td>\nNone<\/td>\nAll<\/td>\n<\/tr>\n
Prisma Access<\/td>\nNone<\/td>\nAll<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n

The company urges admins to upgrade vulnerable systems immediately. Older, unsupported PAN-OS versions should migrate to a patched release. No workarounds exist, and Threat Prevention signatures can\u2019t detect exploits due to the vulnerability\u2019s design.<\/p>\n

Palo Alto reports no known exploitation<\/a> in the wild. Still, security experts warn of risks in high-traffic environments. \u201cDoS flaws like this can cascade into major disruptions, especially if chained with other attacks. Organizations relying on Palo Alto for perimeter defense must prioritize patching.<\/p>\n

Firewalls with ADNS form a key line of defense against DNS-based threats, making this exposure particularly concerning for enterprises blocking malicious domains. Admins should verify configurations and scan for unpatched systems via Palo Alto\u2019s support portal.<\/p>\n

Follow us on Google News<\/a>, LinkedIn<\/a>, and X<\/a> for daily cybersecurity updates. Contact us<\/a> to feature your stories.<\/strong><\/p>\n

The post Palo Alto Networks Firewall Vulnerability Allows an Attacker to Force Firewalls into a Reboot Loop<\/a> appeared first on Cyber Security News<\/a>.<\/p>\n<\/div>\n

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Palo Alto Networks Firewall Vulnerability Allows an Attacker to Force Firewalls into a Reboot Loop A critical denial-of-service (DoS) flaw in Palo Alto Networks\u2019 PAN-OS software could let unauthenticated attackers crash firewalls into endless reboot cycles, potentially crippling enterprise networks. Dubbed CVE-2026-0229, the vulnerability lurks in the Advanced DNS Security (ADNS) feature. An attacker sends […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[129,63,131,648],"tags":[130],"class_list":["post-10600","post","type-post","status-publish","format-standard","hentry","category-cyber-security","category-cyber-security-news","category-vulnerability","category-vulnerability-news","tag-cyber-security-news"],"_links":{"self":[{"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/posts\/10600"}],"collection":[{"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/comments?post=10600"}],"version-history":[{"count":0,"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/posts\/10600\/revisions"}],"wp:attachment":[{"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/media?parent=10600"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/categories?post=10600"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/tags?post=10600"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}