CVE-2024-45746Network attack vector

Secure-world code execution via unchecked mailbox pointers

Published Oct 9, 2024 · Updated Oct 10, 2024

Memory corruption in Trusted Firmware-M 1.6.0 through 2.1.0 allows attackers to execute code in secure firmware via mailbox messages. The mailbox_direct_reply routine writes output-vector lengths through unvalidated caller-supplied list pointers even after a PSA call fails. Exploitation requires an NSPE client on a platform using the standard tfm_spe_mailbox dispatcher and can overwrite secure memory and seize control flow.

CVSS severity9.8
Critical
EPSS probability0.81%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in Trusted Firmware-M 1.6.0 through 2.1.0 allows attackers to execute code in secure firmware via mailbox messages. The mailbox_direct_reply routine writes output-vector lengths through unvalidated caller-supplied list pointers even after a PSA call fails. Exploitation requires an NSPE client on a platform using the standard tfm_spe_mailbox dispatcher and can overwrite secure memory and seize control flow.

The record

CVE
CVE-2024-45746
Published
Oct 9, 2024
Updated
Oct 10, 2024
Vendor
Trusted Firmware
Product
Trusted Firmware-M
Classifications
CWE-120, T1068
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 9, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 10, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.6.0 <=2.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Trusted Firmware · Trusted Firmware-Mversion=1.6.0 <=2.1.0

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

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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