Buffer overflow in Meshtastic Firmware
CVE-2025-24797
Meshtastic is an open source mesh networking solution. A fault in the handling of mesh packets containing invalid protobuf data can result in an attacker-controlled buffer overflow, allowing an attacker to hijack execution flow, potentially resulting in remote code execution. This attack does not require authentication or user interaction, as long as the target device rebroadcasts packets on the default channel. This vulnerability fixed in 2.6.2.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.4 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H.
EPSS exploit prediction
EPSS: 0.009 (58.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 58.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: +0.000
Affected products
- Meshtastic Firmware — versions < 2.6.2
- Meshtastic Firmware
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/meshtastic/firmware/security/advisories/GHSA-33hw-xhfh-944r (Third Party Advisory)
Frequently asked questions
- What is CVE-2025-24797?
- CVE-2025-24797 is a critical-severity vulnerability in Meshtastic Firmware, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.4/10. Published 2025-04-15.
- How severe is CVE-2025-24797?
- Critical severity. CVSS v3 base score is 9.4 out of 10.
- Is CVE-2025-24797 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.