CVE-2024-52802: RIOT is an operating system for internet of things (IoT) devices

Q: How do I fix CVE-2024-52802?

riot: upgrade to newer than 2024.04. Exact commands for each OS are on this page.

Q: Is CVE-2024-52802 being exploited?

CVE-2024-52802 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2024-52802 affect?

CVE-2024-52802 affects riot. Severity is high (CVSS 7.5). RIOT is an operating system for internet of things (IoT) devices. In version 2024.04 and prior, the function `_parse_advertise`, located in `/sys/net/application_layer/dhcpv6/client.c`, has no minimum header length check for `dhcpv6_opt_t`

Q: How urgent is CVE-2024-52802?

Priority 50/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2024-52802 is a high-severity flaw (CVSS 7.5) affecting riot. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

RIOT is an operating system for internet of things (IoT) devices. In version 2024.04 and prior, the function `_parse_advertise`, located in `/sys/net/application_layer/dhcpv6/client.c`, has no minimum header length check for `dhcpv6_opt_t` after processing `dhcpv6_msg_t`. This omission could lead to an out-of-bound read, causing system inconsistency. Additionally, the same lack of a header length check is present in the function `_preparse_advert

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.8% (top 45%)
CISA exploited list	No
Weakness	CWE-20, CWE-125
Published	2024-11-22
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: riot-os

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-11-22 16:15 UTCPublished CVE record published
2026-06-17 08:07 UTCUpdated Record last modified

riot-os riot UPGRADE

Affected: <= 2024.04

Fixed in: newer than 2024.04

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-52802?

riot: upgrade to newer than 2024.04. Exact commands for each OS are on this page.

Is CVE-2024-52802 being exploited?

CVE-2024-52802 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-52802 affect?

CVE-2024-52802 affects riot. Severity is high (CVSS 7.5). RIOT is an operating system for internet of things (IoT) devices. In version 2024.04 and prior, the function `_parse_advertise`, located in `/sys/net/application_layer/dhcpv6/client.c`, has no minimum header length check for `dhcpv6_opt_t`

How urgent is CVE-2024-52802?

Priority 50/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

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References

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