ACTIVELY EXPLOITED3 sources verified·1 min read
By Lyrie Threat Intelligence·11/3/2021
CVE-2021-27562 added to CISA KEV: Arm Trusted Firmware
Status: ✅ Confirmed exploited in the wild
Date added: 2021-11-03
Required action: Apply updates per vendor instructions.
Due date: 2021-11-17
Why this matters
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.
Sources
Lyrie Verdict
Lyrie's autonomous detection layer catches active exploitation primitives at machine speed — closing the gap between disclosure and weaponization that traditional defense simply can't cover.