How severe is CVE-2024-51500?

CVE-2024-51500 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2024-51500 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-51500?

CVE-2024-51500 affects Meshtastic Meshtastic Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-51500?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-51500 have an EU (EUVD) identifier?

Yes. CVE-2024-51500 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-45367.

When was CVE-2024-51500 published?

CVE-2024-51500 was published on 2024-11-04 and last updated on 2026-06-17.

CVE-2024-51500

CVE-2024-51500 is a medium-severity vulnerability in Meshtastic Meshtastic Firmware with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-138.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 0% (32nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-45367
Weakness: CWE-138
Affected product: Meshtastic Meshtastic Firmware
Published: 2024-11-04
Last modified: 2026-06-17

Description

Meshtastic firmware is a device firmware for the Meshtastic project. The Meshtastic firmware does not check for packets claiming to be from the special broadcast address (0xFFFFFFFF) which could result in unexpected behavior and potential for DDoS attacks on the network. A malicious actor could craft a packet to be from that address which would result in an amplification of this one message into every node on the network sending multiple messages. Such an attack could result in degraded network performance for all users as the available bandwidth is consumed. This issue has been addressed in release version 2.5.6. All users are advised to upgrade. There are no known workarounds for this vulnerability.

Frequently asked questions

What is CVE-2024-51500?: Meshtastic firmware is a device firmware for the Meshtastic project. The Meshtastic firmware does not check for packets claiming to be from the special broadcast address (0xFFFFFFFF) which could result in unexpected behavior and potential for DDoS attacks on the network. A malicious actor could craft a packet to be from that address which would result in an amplification of this one message into every node on the network sending multiple messages. Such an attack could result in degraded network performance for all users as the available bandwidth is consumed. This issue has been addressed in release version 2.5.6. All users are advised to upgrade. There are no known workarounds for this vulnerability.
How severe is CVE-2024-51500?: CVE-2024-51500 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2024-51500 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-51500?: CVE-2024-51500 affects Meshtastic Meshtastic Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-51500?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-51500 have an EU (EUVD) identifier?: Yes. CVE-2024-51500 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-45367.
When was CVE-2024-51500 published?: CVE-2024-51500 was published on 2024-11-04 and last updated on 2026-06-17.

References

https://github.com/meshtastic/firmware/security/advisories/GHSA-xfmq-5j3j-vgv8

Affected products (1)

cpe:2.3:o:meshtastic:meshtastic_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Meshtastic Meshtastic Firmware

CVE-2025-55293 — Critical (CVSS 9.4): Meshtastic is an open source mesh networking solution. Prior to v2.6.3, an attacker can send NodeInfo with a empty…
CVE-2025-24797 — Critical (CVSS 9.4): Meshtastic is an open source mesh networking solution. A fault in the handling of mesh packets containing invalid…
CVE-2025-52464 — High (CVSS 8.3): Meshtastic is an open source mesh networking solution. In versions from 2.5.0 to before 2.6.11, the flashing procedure…
CVE-2025-55292 — High (CVSS 8.2): Meshtastic is an open source mesh networking solution. In the current Meshtastic architecture, a Node is identified by…
CVE-2024-47078 — High (CVSS 8.1): Meshtastic is an open source, off-grid, decentralized, mesh network. Meshtastic uses MQTT to communicate over an…
CVE-2024-45038 — High (CVSS 7.5): Meshtastic device firmware is a firmware for meshtastic devices to run an open source, off-grid, decentralized, mesh…

All CVEs affecting Meshtastic Meshtastic Firmware →

Other CWE-138 vulnerabilities

CVE-2023-42117 — Critical (CVSS 9.8): Exim Improper Neutralization of Special Elements Remote Code Execution Vulnerability. This vulnerability allows remote…
CVE-2024-38133 — High (CVSS 7.8): Windows Kernel Elevation of Privilege Vulnerability
CVE-2026-26129 — High (CVSS 7.5): Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an…
CVE-2026-32178 — High (CVSS 7.5): Improper neutralization of special elements in .NET allows an unauthorized attacker to perform spoofing over a network.
CVE-2022-0024 — High (CVSS 7.2): A vulnerability exists in Palo Alto Networks PAN-OS software that enables an authenticated network-based PAN-OS…
CVE-2026-20009 — Medium (CVSS 5.3): A vulnerability in the implementation of the proprietary SSH stack with SSH key-based authentication in Cisco Secure…

Browse all CWE-138 vulnerabilities →