CVE-2024-31225Network attack vector

Device crash or code execution via unchecked copy

Published May 1, 2024 · Updated Feb 13, 2025

Buffer overflow in RIOT 2023.10 and earlier allows remote attackers to crash devices or execute code through a crafted CoAP response. The _on_rd_init function copies pdu->payload_len bytes into the static _result_buf without checking the destination capacity, then writes a terminator after the copied data. Exploitation requires an attacker-controlled response to cross a security boundary and user interaction to reach the vulnerable callback.

CVSS severity9.0
Critical
EPSS probability1.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in RIOT 2023.10 and earlier allows remote attackers to crash devices or execute code through a crafted CoAP response. The _on_rd_init function copies pdu->payload_len bytes into the static _result_buf without checking the destination capacity, then writes a terminator after the copied data. Exploitation requires an attacker-controlled response to cross a security boundary and user interaction to reach the vulnerable callback.

The record

CVE
CVE-2024-31225
Published
May 1, 2024
Updated
Feb 13, 2025
Vendor
RIOT-OS
Product
RIOT
Classifications
CWE-120, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 1, 2024CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 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=*
  2. Affected versionversion=<= 2023.10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

RIOT-OS · RIOTversion=*; version=<= 2023.10

Published CVSS scores

9.0NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
8.3GitHub, Inc.CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/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')
T1203Exploitation for Client Execution

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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