CVE-2026-0234 json
Cortex XSOAR: Improper Verification of Cryptographic Signature in Microsoft Teams integration
published 6mo ago modified 14d ago also EUVD-2026-21899
- cvss
- 9.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 14%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- Palo Alto Networks Cortex XSOAR Microsoft Teams Marketplace 1.5.52
- Palo Alto Networks Cortex XSIAM Microsoft Teams Marketplace 1.5.52
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 6mo ago
Exploit prediction
0.23% chance of exploitation in the next 30 days, higher than 14% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 7.2 | CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/AU:N/R:U/V:D/RE:M/U:Red |
| CNA | 4.0 | 7.2 | CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/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:D/RE:M/U:Red |
| NVD | 3.1 | 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
Affected products
- Palo Alto Networks Cortex XSOAR Microsoft Teams Marketplace
- Palo Alto Networks Cortex XSIAM Microsoft Teams Marketplace
Classification
- Weakness
-
- CWE-347 Improper Verification of Cryptographic Signature
References
-
security.paloaltonetworks.com
/CVE-2026-0234
vendor-advisory
Sources
- CVE List CVE-2026-0234
- NVD CVE-2026-0234
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