Technical Severity
MEDIUM
CVSS v3.1 Metrics
5.5
/ 10
Minimal Risk
Critical
Vector Specification
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Exploitation Likelihood
EPSS Prediction
53.15
%
Predictive Probability
Percentile Rank
97.9
th
Documented as more likely to be exploited than 97.9% of known CVEs.
Detection Date
Nov 03, 2021
Remediation Due
Nov 17, 2021
CISA Catalog Active
Threat Analysis
Arm Trusted Firmware contains an out-of-bounds write vulnerability allowing the non-secure (NS) world to trigger a system halt, overwrite secure data, or print out secure data when calling secure functions under the non-secure processing environment (NSPE) handler mode. This vulnerability affects Yealink Device Management servers.
Remediation Directive
Apply updates per vendor instructions.