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TI-2024-34421 Aliases CVE-2024-51500

Failure to check for packets from the broadcast address allows potential DDoS…

Priority HIGH 72CWE-138Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00418 36th percentileScored 2026-11-08
Fix Fixed firmware (meshtastic): 2.5.6

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
meshtasticfirmwarebefore 2.5.62.5.6Patch availableCNA
  • firmware Vendormeshtastic Affected before 2.5.6 Fixed in 2.5.6 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:meshtastic:meshtastic_firmware:*:*:*:*:*:*:*:*before 2.5.6Vulnerablemeshtastic
  • cpe:2.3:o:meshtastic:meshtastic_firmware:*:*:*:*:*:*:*:* Versions before 2.5.6 Vulnerable ·meshtastic

Remediation

  • Fix · CNA firmware (meshtastic) Fixed in 2.5.6

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-51500

References

Patch 1

  • TI-2025-34949 Meshtastic allows crafting of specific NodeInfo packets that overwrite any publicKey saved in the NodeDB CVSS 3.1CRITICAL 9.8
  • TI-2025-34948 In Meshtastic, an attacker can spoof licensed amateur flag for a node CVSS 3.1HIGH 8.2
  • TI-2025-33563 Meshtastic allows Command Injection in GitHub Action CVSS 3.1HIGH 8.0
  • TI-2025-18515 Meshtastic crashes via an unimplemented routing module reply CVSS 3.1MEDIUM 6.5
  • TI-2025-33554 Meshtastic firmware allows forged DMs with no PKC to show up as encrypted CVSS 3.1MEDIUM 5.3
  • TI-2024-31447 Traceroute_APP responses are not rate-limited. CVSS 4.0LOW 2.7
See all 13 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences