Critical Alert 1 Active Exploit Detected Today

CVE-2026-76504 — Cisco Catalyst SD-WAN Manager Hex Encoding Vulnerability →
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October 1, 2026

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CVE-2026-0310NVD

Vulnerability Summary

A buffer overflow vulnerability in the XML processing functionality of Palo Alto Networks PAN-OS® software enables an unauthenticated attacker with network access to the management web or dataplane interface to cause a denial of service (DoS) condition on VM-Series firewalls or execute arbitrary code with root privileges on the PA-Series firewalls.

The security risk posed by this issue is minimized when the management interface is restricted to only trusted internal IP addresses according to our recommended best practice deployment guidelines https://live.paloaltonetworks.com/t5/community-blogs/tips-amp-tricks-how-to-secure-the-management-access-of-your-palo/ba-p/464431 .

Panorama is impacted by this vulnerability.
Severity Level
UNKNOWN
Published Date
Sep 10, 2026
Last Modified
Sep 11, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.37%Probability
Root Weakness (CWE)
CWE-787: Unknown/Unlisted Weakness ↗
Refer to the official MITRE database for detailed architectural specifications regarding this weakness.
CVSS v4.0 Base Metrics — Score 7.2 (HIGH)
Attack VectorNetwork
Attack ComplexityHigh
Attack RequirementsNone
Privileges RequiredNone
User InteractionNone
Confidentiality (Vulnerable System)High
Integrity (Vulnerable System)High
Availability (Vulnerable System)High
Confidentiality (Subsequent System)Low
Integrity (Subsequent System)Low
Availability (Subsequent System)None

Affected & Patched Versions

Affected Versions
  • Palo Alto Networks Cloud NGFW >= All
  • Palo Alto Networks PAN-OS >= 12.2.0 and < 12.2.3
  • Palo Alto Networks PAN-OS >= 12.1.0 and < 12.1.4-h10
  • Palo Alto Networks PAN-OS >= 11.2.0 and < 11.2.4-h21
  • Palo Alto Networks PAN-OS >= 11.1.0 and < 11.1.4-h36
  • Palo Alto Networks PAN-OS >= 10.2.0 and < 10.2.7-h37
  • Palo Alto Networks Prisma Access >= 11.2.0 and < 11.2.4-h21
  • Palo Alto Networks Prisma Access >= 10.2.0 and < 10.2.7-h37
Patched Versions
  • Palo Alto Networks PAN-OS 12.2.3
  • Palo Alto Networks PAN-OS 12.1.4-h10
  • Palo Alto Networks PAN-OS 11.2.4-h21
  • Palo Alto Networks PAN-OS 11.1.4-h36
  • Palo Alto Networks PAN-OS 10.2.7-h37
  • Palo Alto Networks Prisma Access 11.2.4-h21
  • Palo Alto Networks Prisma Access 10.2.7-h37
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🚫Ad-Free — Uninterrupted experience.
🎁7-Day Free Trial — Try Pro or Team, no card required.
📧Email Delivery — Threat intel straight to your inbox.
♾️Unlimited Vendors — Track your entire stack.
🚨All New CVEs — Be the first to know.
📈EPSS Spike Alerts — Catch rising risk before it peaks.
🎯Custom EPSS/CVSS — Filter noise, focus on risk.
🛡️Exploit Intel — A 2nd confirmed-exploit signal beyond KEV.
🐙GitHub Issues — Auto-tracked, no duplicates.
📬Weekly Digest — One clean summary, not inbox spam.
🏷️Watchlist Groups — Tag alerts by team (Infra/AppSec/SOC).
💬Webhooks — Slack & Teams integration.
🔀Smart Routing — Critical alerts to one channel, rest to another.
🚫Ad-Free — Uninterrupted experience.

External References