CVE-2023-32096Network attack vector

Key disclosure via optimized-away buffer clearing

Published May 18, 2023 · Updated Jan 21, 2025

Information disclosure in Silicon Labs Gecko Platform SDK 4.2.1 and earlier allows remote authenticated users to expose key material in RAM. In sli_crypto_transparent_aead_encrypt_tag, ordinary buffer clearing is optimized away as a dead store, leaving an AEAD key duplicate in memory after use. Exploitation requires network access, low privileges, and conditions permitting recovery of residual RAM contents; the published impact is limited to key confidentiality.

CVSS severity3.1
Low
EPSS probability0.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Silicon Labs Gecko Platform SDK 4.2.1 and earlier allows remote authenticated users to expose key material in RAM. In sli_crypto_transparent_aead_encrypt_tag, ordinary buffer clearing is optimized away as a dead store, leaving an AEAD key duplicate in memory after use. Exploitation requires network access, low privileges, and conditions permitting recovery of residual RAM contents; the published impact is limited to key confidentiality.

The record

CVE
CVE-2023-32096
Published
May 18, 2023
Updated
Jan 21, 2025
Vendor
Silicon Laboratories
Product
Gecko Platform
Classifications
CWE-14
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 18, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 21, 2025Record 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=0 <4.2.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Silicon Laboratories · Gecko Platformversion=0 <4.2.2

Published CVSS scores

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

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

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-14Compiler Removal of Code to Clear Buffers

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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