CVE-2024-2502

Boot-block bypass via stale tamper reset state

Published Aug 29, 2024 · Updated Aug 30, 2024

Improper tamper-event handling in Silicon Labs SE Firmware 2.2.5 and earlier allows physically proximate attackers to bypass boot blocking. The firmware does not reliably update the TAMPERRSTCAUSE register after a level 4 tamper reset, so consecutive resets are not counted as configured. Physical access to an affected xG23B, xG24B, xG25B, or xG28B HSE-SVH device is required, and the consequence is limited to defeating the configured boot-attempt block.

CVSS severity2.0
Low
EPSS probability0.17%
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

Improper tamper-event handling in Silicon Labs SE Firmware 2.2.5 and earlier allows physically proximate attackers to bypass boot blocking. The firmware does not reliably update the TAMPERRSTCAUSE register after a level 4 tamper reset, so consecutive resets are not counted as configured. Physical access to an affected xG23B, xG24B, xG25B, or xG28B HSE-SVH device is required, and the consequence is limited to defeating the configured boot-attempt block.

The record

CVE
CVE-2024-2502
Published
Aug 29, 2024
Updated
Aug 30, 2024
Vendor
Silicon Laboratories
Product
Secure Element Firmware
Classifications
CWE-754, CAPEC-440
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 29, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 30, 2024Record 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?

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

  1. Affected versionversion=0 <=2.2.5

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

Silicon Laboratories · Secure Element Firmwareversion=0 <=2.2.5

Published CVSS scores

2.0Silicon LabsCVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:N/I:L/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.

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-754Improper Check for Unusual or Exceptional Conditions
CAPEC-440Hardware Integrity Attack

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

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