CVE-2022-26296Public exploit

Local secret disclosure via transient BIM poisoning

Published Mar 28, 2022 · Updated Aug 3, 2024

Transient-execution side channel in BOOM before 3.0.0 allows local users to disclose machine-mode secrets through branch prediction. A supervisor-mode load executes transiently before the PMP access violation is checked, and the accessed secret updates the BIM branch-prediction table. Local supervisor-mode execution is required; timing the poisoned BIM state can recover firmware or enclave data without modifying it.

CVSS severity5.5
Medium
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Transient-execution side channel in BOOM before 3.0.0 allows local users to disclose machine-mode secrets through branch prediction. A supervisor-mode load executes transiently before the PMP access violation is checked, and the accessed secret updates the BIM branch-prediction table. Local supervisor-mode execution is required; timing the poisoned BIM state can recover firmware or enclave data without modifying it.

The record

CVE
CVE-2022-26296
Published
Mar 28, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 28, 2022CVE 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 vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

No sourced classifications are available.

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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