Buffer overflow in Libmodbus
CVE-2024-36843
libmodbus v3.1.6 was discovered to contain a heap overflow via the modbus_mapping_free() function.
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: 0.008 (54.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 54.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- Libmodbus — versions 3.1.6
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/stephane/libmodbus/issues/748 (Exploit, Issue Tracking, Vendor Advisory)
- github.com/balckgu1/libmodbusPoc/blob/main/gdb.md (Exploit, Third Party Advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2024-36843?
- CVE-2024-36843 is a high-severity vulnerability in Libmodbus, classified under Heap-based Buffer Overflow. CVSS score: 7.5/10. Published 2024-05-31.
- How severe is CVE-2024-36843?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2024-36843 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.