Buffer overflow in Libmodbus
CVE-2024-34244
libmodbus v3.1.10 is vulnerable to Buffer Overflow via the modbus_write_bits function. This issue can be triggered when the function is fed with specially crafted input, which leads to out-of-bounds read and can potentially cause a crash or other unintended behaviors.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.005 (42.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 42.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Libmodbus — versions 3.1.10
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/stephane/libmodbus/issues/743 (Exploit, Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2024-34244?
- CVE-2024-34244 is a high-severity vulnerability in Libmodbus, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.5/10. Published 2024-05-08.
- How severe is CVE-2024-34244?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2024-34244 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.