PAN-OS: Firewall Denial of Service (DoS) via a Burst of Crafted Packets
Priority MEDIUM 41CWE-770Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-770.
Summary
A memory leak exists in Palo Alto Networks PAN-OS software that enables an attacker to send a burst of crafted packets through the firewall that eventually prevents the firewall from processing traffic. This issue applies only to PA-5400 Series devices that are running PAN-OS software with the SSL Forward Proxy feature enabled.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00922 60th percentileScored 2026-11-07
Fix Fixed PAN-OS (Palo Alto Networks): 9.0.0, 9.1.0, 10.1.0 +3Cloud NGFW (Palo Alto Networks): All+1 more product
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Palo Alto Networks | PAN-OS | 10.2.0 to before 10.2.7-h3; 11.0.0 to before 11.0.4; 11.1.0 to before 11.1.2 | 9.0.0, 9.1.0, 10.1.0, 10.2.7-h3, 11.0.4, 11.1.2 | Patch available | CNA |
| Palo Alto Networks | Cloud NGFW | — | All | Patch available | CNA |
| Palo Alto Networks | Prisma Access | — | All | Patch available | CNA |
- PAN-OS VendorPalo Alto Networks Affected 10.2.0 to before 10.2.7-h3; 11.0.0 to before 11.0.4; 11.1.0 to before 11.1.2 Fixed in 9.0.0, 9.1.0, 10.1.0, 10.2.7-h3, 11.0.4, 11.1.2 Patch available CNA
- Cloud NGFW VendorPalo Alto Networks Affected — Fixed in All Patch available CNA
- Prisma Access VendorPalo Alto Networks Affected — Fixed in All Patch available CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* | 10.2.0 to before 10.2.7; 11.0.0 to before 11.0.4; 11.1.0 to before 11.1.2 | Vulnerable | CyberArk Software, a Palo Alto Networks Company |
| cpe:2.3:o:paloaltonetworks:pan-os:10.2.7:-:*:*:*:*:*:* | 10.2.7 | Vulnerable | CyberArk Software, a Palo Alto Networks Company |
| cpe:2.3:o:paloaltonetworks:pan-os:10.2.7:h1:*:*:*:*:*:* | 10.2.7 h1 | Vulnerable | CyberArk Software, a Palo Alto Networks Company |
| cpe:2.3:h:paloaltonetworks:pa-5410:-:*:*:*:*:*:*:* | not specified by NVD | Running on | CyberArk Software, a Palo Alto Networks Company |
| cpe:2.3:h:paloaltonetworks:pa-5420:-:*:*:*:*:*:*:* | not specified by NVD | Running on | CyberArk Software, a Palo Alto Networks Company |
| cpe:2.3:h:paloaltonetworks:pa-5430:-:*:*:*:*:*:*:* | not specified by NVD | Running on | CyberArk Software, a Palo Alto Networks Company |
| cpe:2.3:h:paloaltonetworks:pa-5440:-:*:*:*:*:*:*:* | not specified by NVD | Running on | CyberArk Software, a Palo Alto Networks Company |
| cpe:2.3:h:paloaltonetworks:pa-5445:-:*:*:*:*:*:*:* | not specified by NVD | Running on | CyberArk Software, a Palo Alto Networks Company |
- cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* Versions 10.2.0 to before 10.2.7; 11.0.0 to before 11.0.4; 11.1.0 to before 11.1.2 Vulnerable ·CyberArk Software, a Palo Alto Networks Company
- cpe:2.3:o:paloaltonetworks:pan-os:10.2.7:-:*:*:*:*:*:* Versions 10.2.7 Vulnerable ·CyberArk Software, a Palo Alto Networks Company
- cpe:2.3:o:paloaltonetworks:pan-os:10.2.7:h1:*:*:*:*:*:* Versions 10.2.7 h1 Vulnerable ·CyberArk Software, a Palo Alto Networks Company
- cpe:2.3:h:paloaltonetworks:pa-5410:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·CyberArk Software, a Palo Alto Networks Company
- cpe:2.3:h:paloaltonetworks:pa-5420:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·CyberArk Software, a Palo Alto Networks Company
- cpe:2.3:h:paloaltonetworks:pa-5430:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·CyberArk Software, a Palo Alto Networks Company
- cpe:2.3:h:paloaltonetworks:pa-5440:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·CyberArk Software, a Palo Alto Networks Company
- cpe:2.3:h:paloaltonetworks:pa-5445:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·CyberArk Software, a Palo Alto Networks Company
Remediation
- Fix · CNA PAN-OS (Palo Alto Networks) Fixed in 9.0.0, 9.1.0, 10.1.0, 10.2.7-h3, 11.0.4, 11.1.2
- Fix · CNA Cloud NGFW (Palo Alto Networks) Fixed in All
- Fix · CNA Prisma Access (Palo Alto Networks) Fixed in All
Timeline
- 2026-10-02 Threatist record created from CVE-2024-3382
- 2026-10-03 Alias added: GHSA-55c4-h3q7-f6wp
References
More Palo Alto Networks vulnerabilities
- TI-2024-08782 Expedition: Unauthenticated OS Command Injection Vulnerability Leads to Firewall Credential Disclosure KEVCVSS 4.0CRITICAL 9.9
- TI-2024-03172 PAN-OS: Arbitrary File Creation Leads to OS Command Injection Vulnerability in GlobalProtect KEVCVSS 3.1CRITICAL 10.0
- TI-2020-01936 PAN-OS: Authentication Bypass in SAML Authentication KEVCVSS 3.1CRITICAL 10.0
- TI-2017-11675 Palo Alto Networks PAN-OS before 6.1.19, 7.0.x before 7.0.19, 7.1.x before 7.1.14, and… KEVCVSS 3.1CRITICAL 9.8
- TI-2026-00239 PAN-OS: Unauthenticated user initiated Buffer Overflow Vulnerability in User-ID™ Authentication Portal KEVCVSS 4.0CRITICAL 9.3
- TI-2024-08784 Expedition: SQL Injection Leads to Firewall Admin Credential Disclosure KEVCVSS 4.0CRITICAL 9.2
Sources
- CVE-2024-3382 · CVE Program
- CVE-2024-3382 · NVD
- FIRST EPSS
- GHSA-55c4-h3q7-f6wp · GitHub Advisory Database · CC BY 4.0
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