CVE-2022-48251Public exploit

AES key disclosure via electromagnetic leakage

Published Jan 10, 2023 · Updated Aug 3, 2024

Observable discrepancy in ARMv8 AES instructions allows physically proximate attackers to extract AES keys through electromagnetic traces. The instructions process key-dependent AES state in NEON registers without intrinsic side-channel resistance, producing emissions correlated with intermediate values. Key recovery requires close-range measurement and many known-ciphertext traces; Arm disputes architecture-level causation, with no reported integrity or availability impact.

CVSS severity7.5
High
EPSS probability0.83%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Observable discrepancy in ARMv8 AES instructions allows physically proximate attackers to extract AES keys through electromagnetic traces. The instructions process key-dependent AES state in NEON registers without intrinsic side-channel resistance, producing emissions correlated with intermediate values. Key recovery requires close-range measurement and many known-ciphertext traces; Arm disputes architecture-level causation, with no reported integrity or availability impact.

The record

CVE
CVE-2022-48251
Published
Jan 10, 2023
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-203, CAPEC-189
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 10, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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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

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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.

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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-203Observable Discrepancy
CAPEC-189Black Box Reverse Engineering

Public exploit references

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

Technologies

Your stack

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Your stack

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