CVE-2022-47549 — An unprotected memory-access operation in optee_os in TrustedFirmware Open Porta

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 inj

01What is this vulnerability?

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.

02Affected products

No structured affected-product list available — see references below for vendor advisories.

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2022-12-19T09:15:09.637
• Last modified: 2026-06-05T20:13:25.387

09References

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