CVE-2023-2687

Limited heap overwrite via Platform CLI overflow

Published Jun 2, 2023 · Updated Jan 8, 2025

Heap buffer overflow in the Platform CLI component of Silicon Labs Gecko SDK 4.2.1 and earlier allows local users to overwrite heap structures. Silicon Labs has not published the affected function, input path, or length-handling error that causes the overflow. Exploitation requires local access and high-complexity conditions; the published impact is limited modification of heap structures, with no reported data disclosure or service interruption.

CVSS severity2.9
Low
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap buffer overflow in the Platform CLI component of Silicon Labs Gecko SDK 4.2.1 and earlier allows local users to overwrite heap structures. Silicon Labs has not published the affected function, input path, or length-handling error that causes the overflow. Exploitation requires local access and high-complexity conditions; the published impact is limited modification of heap structures, with no reported data disclosure or service interruption.

The record

CVE
CVE-2023-2687
Published
Jun 2, 2023
Updated
Jan 8, 2025
Vendor
Sigma Designs
Product
Gecko SDK
Classifications
CWE-787, CWE-131
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 2, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 8, 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 <=4.2.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Sigma Designs · Gecko SDKversion=0 <=4.2.1

Published CVSS scores

2.9Silicon LabsCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
3.3NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
CWE-131Incorrect Calculation of Buffer Size

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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