Vulnerability record · CVE-2022-47549 · published 19 December 2022

CVE-2022-47549: Trustedfirmware op-tee improper verification of cryptographic signature vulnerability

Trustedfirmware · Op Tee

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.

6.4 CVSS 3.1 Medium EPSS 0.42% · top 66.3% CWE-347 · Improper verification of cryptographic signature

6.4CVSS 3.1 base score

0.42%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

4References, 2 tagged exploit

17 Jun 2026Last modified by NVD

Description

CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Op Tee Trustedfirmware

References

Link	Tags
https://github.com/OP-TEE/optee_os/security/advisories/GHSA-r64m-h886-hw6g	Third Party Advisory
https://people.linaro.org/~joakim.bech/reports/Breaking_cross-world_isolation_on_ARM_TrustZone_through_EM_faults_coredum	ExploitTechnical DescriptionVendor Advisory
https://github.com/OP-TEE/optee_os/security/advisories/GHSA-r64m-h886-hw6g	Third Party Advisory
https://people.linaro.org/~joakim.bech/reports/Breaking_cross-world_isolation_on_ARM_TrustZone_through_EM_faults_coredum	ExploitTechnical DescriptionVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2019-1010292Trustedfirmware op-tee out-of-bounds write vulnerabilityLinaro/OP-TEE OP-TEE Prior to version v3.4.0 is affected by: Boundary checks. The impact is: This could lead to corruption of any memory which the TA…EPSS 1.6%16 Jul 2019 9.8CVE-2019-1010297Trustedfirmware op-tee integer overflow vulnerabilityLinaro/OP-TEE OP-TEE 3.3.0 and earlier is affected by: Buffer Overflow. The impact is: Execution of code in TEE core (kernel) context. The component …EPSS 2.7%15 Jul 2019 9.8CVE-2019-1010295Trustedfirmware op-tee improper input validation vulnerabilityLinaro/OP-TEE OP-TEE 3.3.0 and earlier is affected by: Buffer Overflow. The impact is: Memory corruption and disclosure of memory content. The compon…EPSS 1.6%15 Jul 2019 9.8CVE-2019-1010293Trustedfirmware op-tee out-of-bounds write vulnerabilityLinaro/OP-TEE OP-TEE 3.3.0 and earlier is affected by: Boundary crossing. The impact is: Memory corruption of the TEE itself. The component is: optee…EPSS 1.6%15 Jul 2019 9.8CVE-2019-1010298Trustedfirmware op-tee integer overflow vulnerabilityLinaro/OP-TEE OP-TEE 3.3.0 and earlier is affected by: Buffer Overflow. The impact is: Code execution in the context of TEE core (kernel). The compon…EPSS 3.9%15 Jul 2019 9.8CVE-2019-1010296Trustedfirmware op-tee integer overflow vulnerabilityLinaro/OP-TEE OP-TEE 3.3.0 and earlier is affected by: Buffer Overflow. The impact is: Code execution in context of TEE core (kernel). The component …EPSS 2.8%15 Jul 2019 9.1CVE-2019-25052Trustedfirmware op-tee broken cryptographic algorithm vulnerabilityIn Linaro OP-TEE before 3.7.0, by using inconsistent or malformed data, it is possible to call update and final cryptographic functions directly, cau…EPSS 0.87%11 Aug 2021 8.8CVE-2022-46152Trustedfirmware op-tee vulnerabilityOP-TEE Trusted OS is the secure side implementation of OP-TEE project, a Trusted Execution Environment. Versions prior to 3.19.0, contain an Improper…EPSS 0.49%29 Nov 2022

Source: NIST National Vulnerability Database (record CVE-2022-47549), CISA KEV, FIRST EPSS (scores of 2026-10-02). This page is refreshed as NVD updates the record.