Vulnerability in Palo Alto Networks Cortex Xsoar
CVE-2021-3051
An improper verification of cryptographic signature vulnerability exists in Cortex XSOAR SAML authentication that enables an unauthenticated network-based attacker with specific knowledge of the Cortex XSOAR instance to access protected resources and perform unauthorized actions on the Cortex XSOAR server. This issue impacts: Cortex XSOAR 5.5.0 builds earlier than 1578677; Cortex XSOAR 6.0.2 builds earlier than 1576452; Cortex XSOAR 6.1.0 builds earlier than 1578663; Cortex XSOAR 6.2.0 builds earlier than 1578666. All Cortex XSOAR instances hosted by Palo Alto Networks are protected from this vulnerability; no additional action is required for these instances.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (45.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 45.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Palo Alto Networks Cortex Xsoar — versions 5.5.0, 6.0.2, 6.1.0
- Paloaltonetworks Cortex Xsoar — versions 5.5.0, 6.0.2, 6.1.0
Weakness classification (CWE)
References
- security.paloaltonetworks.com/CVE-2021-3051 (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-3051?
- CVE-2021-3051 is a high-severity vulnerability in Palo Alto Networks Cortex Xsoar, classified under Improper Verification of Cryptographic Signature. CVSS score: 8.1/10. Published 2021-09-08.
- How severe is CVE-2021-3051?
- High severity. CVSS v3 base score is 8.1 out of 10.