CVE-2026-0304

MEDIUMPre-NVD 4.84.8—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 4.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 88% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this week
4.8EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A privilege escalation vulnerability in Palo Alto Networks Cortex XDR Broker VM enables an authenticated low privileged user with man-in-the-middle (MitM) access to execute code with root privileges on the Broker VM.

CVSS v3
4.8
EG Score
4.8(medium)
EG Risk
22(Track)
EG Risk 22/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity48% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
13%
KEV
Not listed

Published

September 10, 2026

Last Modified

September 11, 2026

Advisory Details (1)

Auto-updated Sep 10, 2026
No patch confirmed yet.
generic

CVE-2026-0304 Cortex XDR Broker VM: Privilege Escalation Vulnerability

https://security.paloaltonetworks.com/CVE-2026-0304

Vendor Advisories for CVE-2026-0304(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 16× in last 7d / 32× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-18 19:27 UTCEPSS rescore
  2. 2026-09-18 07:36 UTCEG score recompute
  3. 2026-09-18 07:36 UTCGHSA enrichment
  4. 2026-09-17 07:08 UTCEG score recompute
  5. 2026-09-17 07:08 UTCGHSA enrichment
  6. 2026-09-16 06:40 UTCEG score recompute
  7. 2026-09-16 06:40 UTCGHSA enrichment
  8. 2026-09-16 05:14 UTCEPSS rescore
  9. 2026-09-15 06:13 UTCEG score recompute
  10. 2026-09-15 06:13 UTCGHSA enrichment
  11. 2026-09-14 05:43 UTCEG score recompute
  12. 2026-09-14 05:43 UTCGHSA enrichment
  13. 2026-09-13 16:46 UTCEPSS rescore
  14. 2026-09-13 05:15 UTCEG score recompute
  15. 2026-09-13 05:15 UTCGHSA enrichment
  16. 2026-09-12 15:00 UTCEPSS rescore
  17. 2026-09-12 04:48 UTCEG score recompute
  18. 2026-09-12 04:48 UTCGHSA enrichment
  19. 2026-09-11 14:52 UTCEPSS rescore
  20. 2026-09-11 09:36 UTCEPSS rescore
  21. 2026-09-11 04:21 UTCEG score recompute
  22. 2026-09-11 04:21 UTCGHSA enrichment
  23. 2026-09-11 04:00 UTCEG score recompute
  24. 2026-09-11 04:00 UTCGHSA enrichment
  25. 2026-09-10 14:57 UTCGHSA enrichment
Show 7 more
  1. 2026-09-10 14:20 UTCEG score recompute
  2. 2026-09-10 14:20 UTCGHSA enrichment
  3. 2026-09-10 13:21 UTCEG score recompute
  4. 2026-09-10 13:21 UTCGHSA enrichment
  5. 2026-09-10 07:35 UTCEG score recompute
  6. 2026-09-10 06:30 UTCEG score recompute
  7. 2026-09-10 06:29 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-0304?
CVE-2026-0304 is a medium vulnerability published on September 10, 2026. A privilege escalation vulnerability in Palo Alto Networks Cortex XDR Broker VM enables an authenticated low privileged user with man-in-the-middle (MitM) access to execute code with root privileges on the Broker VM.
When was CVE-2026-0304 disclosed?
CVE-2026-0304 was first published in the National Vulnerability Database on September 10, 2026, with the most recent update on September 11, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-0304 actively exploited?
CVE-2026-0304 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 87.4% of all scored CVEs.
What is the CVSS score of CVE-2026-0304?
CVE-2026-0304 has a CVSS v3 base score of 4.8 (NVD).
How do I remediate CVE-2026-0304?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-0304, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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