Evidence dossier

CVE-2024-3393

PAN-OS: Firewall Denial of Service (DoS) in DNS Security Using a Specially Crafted Packet

69.1–87.1Priority evidence range

As known Jul 19, 2026, 5:00 AM UTCgen-56ccdaf9

Normalized restatement

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.

State: PUBLISHED
Published: Dec 27, 2024
Updated: Oct 21, 2025
Evidence coverage: 72%

CISA KEVCatalog member

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

FIRST EPSS26.64%

2026-07-18 · v2026.06.15 · percentile 97.8%

Source stateConflict visible

Distinct CVSS assessments remain side by side; none are averaged.

Source comparison

Who said what

CISA-ADPindependent enrichment

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CISA ADP Vulnrichment

Jul 19, 2026Original evidence ↗

palo_altooriginal assertion

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PAN-OS: Firewall Denial of Service (DoS) in DNS Security Using a Specially Crafted Packet

Jul 19, 2026Original evidence ↗

CISA KEVoriginal assertion

observed_exploitation

Palo Alto Networks PAN-OS Malicious DNS Packet Vulnerability

Jul 19, 2026Original evidence ↗

FIRST EPSSoriginal assertion

model_probability

Probability 0.266360000000; percentile 0.977970000000

Jul 19, 2026Original evidence ↗

Applicability

Cited product scope

Trace impact →

Palo Alto NetworksCloud NGFW

[{"status": "unaffected", "version": "All"}]unknown

Palo Alto NetworksPAN-OS

[{"status": "affected", "version": "11.2.0", "lessThan": "11.2.3", "versionType": "custom"}, {"status": "affected", "version": "11.1.0", "lessThan": "11.1.2-h16", "versionType": "custom"}, {"status": "affected", "version": "10.2.8", "lessThan": "10.2.8-h19", "versionType": "custom"}, {"status": "affected", "version": "10.1.14", "lessThan": "10.1.14-h8", "versionType": "custom"}]

unknown

Palo Alto NetworksPAN-OS

[{"status": "unaffected", "version": "10.2.0", "lessThan": "10.2.8", "versionType": "custom"}, {"status": "affected", "version": "11.2.0", "lessThan": "11.2.3", "versionType": "custom"}]

unknown

Unknown vendorUnknown product

cpe:2.3:a:paloaltonetworks:prisma_access:-:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*; start including 11.1.0; end including 11.1.1supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*; start including 11.2.0; end excluding 11.2.3supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*; start including 10.2.11; end excluding 11.2.3constrained

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.1.14:-:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.1.14:h2:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.1.14:h4:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.1.14:h6:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.10:-:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.10:-:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.10:h10:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.10:h10:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.10:h2:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.10:h2:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.10:h3:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.10:h3:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.10:h4:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.10:h4:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.10:h5:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.10:h5:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.10:h7:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.10:h7:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.10:h9:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.10:h9:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.11:-:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.11:h1:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.11:h2:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.11:h3:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.11:h4:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.11:h6:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.11:h9:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.12:-:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.12:h1:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.12:h2:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.12:h3:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.13:-:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.13:h1:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.8:-:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.8:-:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.8:h10:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.8:h10:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.8:h13:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.8:h13:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.8:h15:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.8:h15:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.8:h18:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.8:h18:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.8:h19:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.8:h3:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.8:h3:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.8:h4:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.8:h4:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.9:-:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.9:-:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.9:h1:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.9:h1:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.9:h11:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.9:h11:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.9:h14:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.9:h14:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.9:h16:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.9:h16:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.9:h18:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.9:h18:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.9:h9:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:10.2.9:h9:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:11.1.2:-:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:11.1.2:h1:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:11.1.2:h12:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:11.1.2:h14:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:11.1.2:h15:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:11.1.2:h3:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:11.1.2:h4:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:11.1.2:h9:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:11.1.3:-:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:11.1.3:h1:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:11.1.3:h10:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:11.1.3:h11:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:11.1.3:h2:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:11.1.3:h4:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:11.1.3:h6:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:11.1.4:-:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:11.1.4:h1:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:paloaltonetworks:pan-os:11.1.4:h4:*:*:*:*:*:*supported

Assessments

CVSS by origin

7.5

nvd@nist.govCVSS 3.1 · role PrimaryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

8.7

psirt@paloaltonetworks.comCVSS 4.0 · role Secondary

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:U/V:C/RE:M/U:Amber

8.7

palo_altoCVSS 4.0 · role unknownCVSS: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

7.1

palo_altoCVSS 4.0 · role unknownCVSS: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

Limitations and unknowns

KEV membership is authoritative for the catalog, not proof of exposure in any environment.
EPSS is a dated model probability and not an individual-environment prediction.
Affected or fixed status applies only to the exact cited product and version scope; unresolved scope remains unknown.
NVD-carried upstream facts remain derivative and are not independent corroboration.
Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
Factor D is unknown in Public Core because no accepted canonical mapping-obligation ledger is present.
Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.