CVE-2023-24818Network attack vector

Device hard fault via unchecked interface lookup

Published Apr 24, 2023 · Updated Feb 4, 2025

NULL pointer dereference in RIOT before 2022.10 allows remote attackers to crash devices with a crafted 6LoWPAN fragment. Fragment forwarding accepts a frame with no source address, obtains an uninitialized reassembly entry, and passes its zero interface PID into gnrc_netif_get_by_pid without checking the NULL return. The target must enable fragmented IP datagrams and process the crafted frame; exploitation raises a hard fault that interrupts device operation.

CVSS severity7.5
High
EPSS probability1.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in RIOT before 2022.10 allows remote attackers to crash devices with a crafted 6LoWPAN fragment. Fragment forwarding accepts a frame with no source address, obtains an uninitialized reassembly entry, and passes its zero interface PID into gnrc_netif_get_by_pid without checking the NULL return. The target must enable fragmented IP datagrams and process the crafted frame; exploitation raises a hard fault that interrupts device operation.

The record

CVE
CVE-2023-24818
Published
Apr 24, 2023
Updated
Feb 4, 2025
Vendor
RIOT-OS
Product
RIOT
Classifications
CWE-476, CWE-252, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 24, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 4, 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=< 2022.10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

RIOT-OS · RIOTversion=< 2022.10

Published CVSS scores

7.5NISTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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-476NULL Pointer Dereference
CWE-252Unchecked Return Value
T1499.004Endpoint Denial of Service: Application or System Exploitation

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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