CVE-2022-47549Public exploit

Malicious trusted applications via faulted signature result

Published Dec 19, 2022 · Updated Apr 17, 2025

Signature-verification bypass in OP-TEE before 3.20 allows physically proximate attackers to install malicious trusted applications. A precisely timed electromagnetic pulse clears a result register to zero, causing the zero-valued TEE_SUCCESS check to accept an invalid signature. The demonstrated attack requires physical proximity and fault-injection equipment; it exposes no secrets but breaks trusted-application integrity.

CVSS severity6.4
Medium
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Signature-verification bypass in OP-TEE before 3.20 allows physically proximate attackers to install malicious trusted applications. A precisely timed electromagnetic pulse clears a result register to zero, causing the zero-valued TEE_SUCCESS check to accept an invalid signature. The demonstrated attack requires physical proximity and fault-injection equipment; it exposes no secrets but breaks trusted-application integrity.

The record

CVE
CVE-2022-47549
Published
Dec 19, 2022
Updated
Apr 17, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-347
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 19, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 17, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.4NIST NVDCVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
6.4CISA-ADPCVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-347Improper Verification of Cryptographic Signature

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo