Meshtastic Repeated Public and Private Keypairs
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · Low
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
Meshtastic is an open source mesh networking solution. In versions from 2.5.0 to before 2.6.11, the flashing procedure of several hardware vendors was resulting in duplicated public/private keys. Additionally, the Meshtastic was failing to properly initialize the internal randomness pool on some platforms, leading to possible low-entropy key generation. When users with an affected key pair sent Direct Messages, those message could be captured and decrypted by an attacker that has compiled the list of compromised keys. This issue has been patched in version 2.6.11 where key generation is delayed til the first time the LoRa region is set, along with warning users when a compromised key is detected. Version 2.6.12 furthers this patch by automatically wiping known compromised keys when found. A workaround to this vulnerability involves users doing a complete device wipe to remove vendor-cloned keys.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| meshtastic | firmware | > 2.5.0, < 2.6.11 | — | No fix listed | CNA |
- firmware Vendormeshtastic Affected > 2.5.0, < 2.6.11 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:meshtastic:meshtastic_firmware:*:*:*:*:*:*:*:* | 2.5.0 to before 2.6.11 | Vulnerable | meshtastic |
- cpe:2.3:o:meshtastic:meshtastic_firmware:*:*:*:*:*:*:*:* Versions 2.5.0 to before 2.6.11 Vulnerable ·meshtastic
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-52464
References
Patch 5
- https://github.com/meshtastic/firmware/security/advisories/GHSA-gq7v-jr8c-mfr7
- https://github.com/meshtastic/firmware/commit/4bf2dd04aeeccc4ba20c79bcaad7a572aabdecad
- https://github.com/meshtastic/firmware/commit/55b2bbf93756fc7bbbfdbc7cbf29f88e6b637f22
- https://github.com/meshtastic/firmware/commit/e5f6804421ac4b76dd31980250a505dba24c2aa6
- https://github.com/meshtastic/firmware/commit/e623c70bd0c2ab9db9baf04888e19d1428310bb9
More Meshtastic Firmware vulnerabilities
- 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-2024-34421 Failure to check for packets from the broadcast address allows potential DDoS… CVSS 3.1HIGH 7.5
- 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
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences