What’s Vulnerable › Vulnerabilities

CVE-2022-47549

• Severity: medium (CVSS 6.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-12-19 · updated 2026-06-17
• Weakness: CWE-347

Description

An unprotected memory-access operation in optee_os in TrustedFirmware Open Portable Trusted Execution Environment (OP-TEE) before 3.20 allows a physically proximate adversary to bypass signature verification and install malicious trusted applications via electromagnetic fault injections.

Affected products

• Linaro/OP-TEE OP-TEE: before 3.20 — fixed in 3.20

How to fix

Upgrade to a fixed version: Linaro/OP-TEE OP-TEE 3.20. Check the vendor advisory for mitigations.

References

• https://github.com/OP-TEE/optee_os/security/advisories/GHSA-r64m-h886-hw6g
• https://people.linaro.org/~joakim.bech/reports/Breaking_cross-world_isolation_on_ARM_TrustZone_through_EM_faults_coredumps_and_UUID_confusion.pdf
• https://github.com/OP-TEE/optee_os/security/advisories/GHSA-r64m-h886-hw6g
• https://people.linaro.org/~joakim.bech/reports/Breaking_cross-world_isolation_on_ARM_TrustZone_through_EM_faults_coredumps_and_UUID_confusion.pdf

Get alerted when CVE-2022-47549 or the next vulnerability affects your stack