High severity · published May 31, 2024
CVE-2024-36844
libmodbus v3.1.6 was discovered to contain a use-after-free via the ctx->backend pointer
7.5
CVSS
0.6%
EPSS
No
On KEV
Description
libmodbus v3.1.6 was discovered to contain a use-after-free via the ctx->backend pointer. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted message sent to the unit-test-server.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 49% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
Libmodbus · Libmodbus
3.1.6 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-36844
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-36844
Exploit
https://github.com/stephane/libmodbus/issues/749
lists.debian.org
https://lists.debian.org/debian-lts-announce/2025/03/msg00010.html
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