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Pan Os CVE-2024-3393

HIGH
Improper Check for Unusual or Exceptional Conditions (CWE-754)
2024-12-27 psirt@paloaltonetworks.com
8.7
CVSS 4.0 · Vendor: paloaltonetworks
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Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A10:2025 - Mishandling of Exceptional Conditions
ASVS 5.0
V16 - Security Logging and Error Handling Unusual condition handling
Impact

CVSS score of 8.7 (HIGH). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required.

Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the high-severity affected system.

This Week Schedule remediation this week. Why: HIGH severity + EPSS > 10%.
Exploited in the wild (CISA KEV) No patch listed yet 26.6% exploitation probability (EPSS)

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AnalysisAI

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. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified under CWE-754. 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. Affected products include: Paloaltonetworks Pan-Os, Paloaltonetworks Prisma Access.

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Severity by source

Vendor (paloaltonetworks) PRIMARY 8.7 HIGH
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

Primary rating from Vendor (paloaltonetworks) · only source for this CVE.

CVSS VectorVendor: paloaltonetworks

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Vulnerable system: Confidentiality
None
Vulnerable system: Integrity
None
Vulnerable system: Availability
High
Subsequent system: Confidentiality
None
Subsequent system: Integrity
None
Subsequent system: Availability
Low

Lifecycle Timeline

2
Added to CISA KEV
Jul 14, 2026 - 04:22 CISA
CVE Published
Dec 27, 2024 - 10:15 cve.org
HIGH 8.7

DescriptionCVE.org

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.

Threat Intelligence Overview

EPSS Score
26.6%
Top 2% exploitable
Data Quality
2 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV Yes
Public POC No
EPSS 26.6%
Patch available No
Active threat Yes
Deciding rule
HIGH severity + EPSS > 10%
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Immediate
Exploitation· derived
Active
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact· derived
High

Priority Score

121
Low Medium High Critical
KEV: +50
EPSS: +27
CVSS: +44
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

Affected Products (CPE)CVE.org

cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.1.14:-:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.1.14:h2:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.1.14:h4:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.1.14:h6:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.8:-:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.8:h10:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.8:h13:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.8:h15:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.8:h18:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.8:h3:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.8:h4:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.9:-:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.9:h1:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.9:h11:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.9:h14:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.9:h16:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.9:h18:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.9:h9:*:*:*:*:*:*
+ 40 more

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