--- title: "CVE-2024-3393: PAN-OS: Firewall Denial of Service (DoS)… | CubePath" description: "A Denial of Service vulnerability in the DNS Security feature of Palo Alto Networks PAN-OS software allows an unauthenticated attacker to send…" language: en source: https://cubepath.com/security/cve/CVE-2024-3393 --- # CVE-2024-3393: PAN-OS: Firewall Denial of Service (DoS)… | CubePath ## Description A Denial of Service vulnerability in the DNS Security feature of Palo Alto Networks PAN-OS software allows an unauthenticated attacker to send a malicious packet through the data plane of the firewall that reboots the firewall. Repeated attempts to trigger this condition will cause the firewall to enter maintenance mode. Official description from the CVE record, published by palo\_alto. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2024-3393) ## Key data ### CVSS 4.0 High 8.7 Score published by palo\_alto in the CVE record. CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:N/R:U/V:C/RE:M/U:Amber | Metric | Value | What it means | | ----------------------------------- | ------- | --------------------------------------------------------------------------------------------------------------- | | Attack vector | Network | The vulnerable component can be reached over a network, possibly from the Internet. | | Attack complexity | Low | No measurable action is needed to get around the system's built-in security controls. The attack is repeatable. | | Attack requirements | None | The attack works without any special deployment or execution conditions. | | Privileges required | None | No account or privileges are needed. | | User interaction | None | No action from any user is needed. | | Vulnerable system: confidentiality | None | No effect on the secrecy of data. | | Vulnerable system: integrity | None | No effect on the trustworthiness of data. | | Vulnerable system: availability | High | Serious or total effect on availability. | | Subsequent systems: confidentiality | None | No effect on other systems' data secrecy. | | Subsequent systems: integrity | None | No effect on other systems' data trustworthiness. | | Subsequent systems: availability | Low | Limited effect on other systems' availability. | ### CVSS 4.0 High 7.1 Score published by palo\_alto in the CVE record. CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:N/R:U/V:C/RE:M/U:Amber | Metric | Value | What it means | | ----------------------------------- | ------- | --------------------------------------------------------------------------------------------------------------- | | Attack vector | Network | The vulnerable component can be reached over a network, possibly from the Internet. | | Attack complexity | Low | No measurable action is needed to get around the system's built-in security controls. The attack is repeatable. | | Attack requirements | None | The attack works without any special deployment or execution conditions. | | Privileges required | Low | A basic user account is needed. | | User interaction | None | No action from any user is needed. | | Vulnerable system: confidentiality | None | No effect on the secrecy of data. | | Vulnerable system: integrity | None | No effect on the trustworthiness of data. | | Vulnerable system: availability | High | Serious or total effect on availability. | | Subsequent systems: confidentiality | None | No effect on other systems' data secrecy. | | Subsequent systems: integrity | None | No effect on other systems' data trustworthiness. | | Subsequent systems: availability | Low | Limited effect on other systems' availability. | CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at [first.org/cvss](https://www.first.org/cvss/) . ### EPSS Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days. Score 0.30218 (30.2% probability) Percentile 98.2% Scores of Nov 10, 2026 Model v2026.06.15 ### CISA Known Exploited Vulnerabilities This CVE is listed in the CISA KEV catalog. Name in the catalog Palo Alto Networks PAN-OS Malicious DNS Packet Vulnerability Added to the catalog Dec 30, 2024 Federal due date Jan 20, 2025 ### CISA assessment as of Jan 9, 2025 Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA. Exploitation Recorded by CISA as active Automatable yes Technical impact partial ### Weakness (CWE) CWE catalog version 5.0. CWE names: Copyright © 2006-2026, The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CWE license. - [CWE-754](https://cwe.mitre.org/data/definitions/754.html) Improper Check for Unusual or Exceptional Conditions ## Affected products Products listed in the CVE record, as the CNA published them. - Palo Alto Networks PAN-OS - affected: 11.2.0 up to before 11.2.3 - affected: 11.1.0 up to before 11.1.2-h16 - affected: 10.2.8 up to before 10.2.8-h19 - affected: 10.1.14 up to before 10.1.14-h8 - Palo Alto Networks PAN-OS - unaffected: 10.2.0 up to before 10.2.8 - affected: 11.2.0 up to before 11.2.3 ### Listed as not affected - Palo Alto Networks Cloud NGFW ## References Links listed in the CVE record. They lead to other sites, which CubePath does not control. - [security.paloaltonetworks.com/CVE-2024-3393](https://security.paloaltonetworks.com/CVE-2024-3393) vendor-advisory ## Timeline 1. ID reserved Apr 5, 2024 2. Record published Dec 27, 2024 3. Added to CISA KEV Dec 30, 2024 4. Record last updated Oct 21, 2025 ## Look up another CVE ## About CubePath CubePath is a cloud provider with data centers in Europe and the United States. It offers VPS, bare metal servers and DDoS protection. [Cloud VPS](https://cubepath.com/vps) [DDoS protection](https://cubepath.com/ddos-protection) Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 20:02 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)