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PatchSiren cyber security CVE debrief

CVE-2024-3393 Palo Alto Networks CVE debrief

CVE-2024-3393 is a Palo Alto Networks PAN-OS issue described in the supplied record as a malicious DNS packet vulnerability. CISA lists it in the Known Exploited Vulnerabilities catalog, which means defenders should treat it as an active risk and prioritize mitigation. The supplied corpus does not include affected versions, impact details, or vendor remediation steps, so the safest approach is to use the official Palo Alto Networks advisory and NVD entry to confirm exposure and apply vendor guidance quickly.

Vendor
Palo Alto Networks
Product
PAN-OS
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2024-12-30
Original CVE updated
2024-12-30
Advisory published
2024-12-30
Advisory updated
2024-12-30

Who should care

Security teams that operate or monitor Palo Alto Networks PAN-OS, especially administrators responsible for firewall, network security, and edge devices. Incident responders and vulnerability management teams should also treat this as urgent because CISA has included it in the KEV catalog.

Technical summary

The supplied sources identify CVE-2024-3393 as a PAN-OS malicious DNS packet vulnerability and confirm that CISA has cataloged it as known exploited. No additional technical details are provided in the corpus about affected releases, attack conditions, impact, or exploit mechanics. Because the vulnerability is on the KEV list, the operational takeaway is to verify whether any PAN-OS instances are affected and to follow vendor instructions for mitigation without delay.

Defensive priority

High / urgent. CISA KEV listing plus a remediation due date of 2025-01-20 indicate this should be prioritized ahead of routine maintenance, with immediate validation of exposure and mitigation status.

Recommended defensive actions

  • Inventory all Palo Alto Networks PAN-OS deployments and determine whether any are affected.
  • Review the official Palo Alto Networks advisory and NVD entry for version-specific impact and remediation guidance.
  • Apply mitigations per vendor instructions as soon as possible.
  • If vendor mitigations are unavailable for a deployed instance, follow CISA guidance and discontinue use of the product where feasible.
  • Track remediation progress against the CISA KEV due date of 2025-01-20.
  • Confirm that configuration, exposure, and patch status are documented for incident response and audit purposes.

Evidence notes

Evidence was limited to the supplied corpus: CVE-2024-3393 identifier and title, CISA KEV metadata showing vendor/product, dateAdded 2024-12-30, dueDate 2025-01-20, and the required-action statement to apply mitigations per vendor instructions or discontinue use if mitigations are unavailable. No exploit code, affected-version list, or technical impact details were present, so none are stated here.

Official resources

Publicly listed in the supplied record on 2024-12-30, with CISA KEV dateAdded also recorded as 2024-12-30 and dueDate 2025-01-20.