CVE•Published 2026-04-13•Modified 2026-07-07•1 article on news•5 live references•NVD data

CVE-2026-0234Paloaltonetworks · Cortex_xsiam

Vulnerability data via NVD (ingested)

CVSS v3.1

9.1

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS percentile

Exploit Prediction Scoring System · top 85% of all CVEs

Weaknesses (CWE)

CWE-347Improper Verification of Cryptographic Signature

Description

An improper verification of cryptographic signature vulnerability exists in Cortex XSOAR and Cortex XSIAM platforms during integration of Microsoft Teams that enables an unauthenticated user to access and modify protected resources.

Timeline

Published 2026-04-13

Modified 2026-07-07

External references

NVD MITRE Exploit-DB GitHub PoC VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-0234

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Paloaltonetworks Cortex Xsiam"

All exposed Paloaltonetworks Cortex Xsiam instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Cortex Xsiam"

HTTP body or banner mentions "Cortex Xsiam" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-0234