CVE catalog

CVE-2024-36843

libmodbus: CVE-2024-36843

Severity: Medium
Published: May 31, 2024, 8:15:10 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.79% · Oct 25, 2026

libmodbus v3.1.6 was discovered to contain a heap overflow via the modbus_mapping_free() function.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	libmodbus	sid	`3.2.0-1`	fixed
Debian	libmodbus	forky	`3.2.0-1`	fixed
Debian	libmodbus	trixie	`3.1.11-2`	fixed
Debian	libmodbus	bookworm	`3.1.6-2.1`	fixed
Debian	libmodbus	bookworm-security	`3.1.6-2.1+deb12u1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	libmodbus	source	sid	`3.1.6-2.1`	not yet assigned	Not reported	[1074422]
Debian	libmodbus	source	forky	`3.1.6-2.1`	not yet assigned	Not reported	[1074422]
Debian	libmodbus	source	trixie	`3.1.6-2.1`	not yet assigned	Not reported	[1074422]
Debian	libmodbus	source	bookworm	`3.1.6-2.1`	not yet assigned	Not reported	[1074422]

[Debian bug #1074422]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libmodbus5]Fixed
Source package: [libmodbus]
Details (4)
- 3.1.6-2.1 · amd64 · bookworm
  Fixed · Fixed: 3.1.6-2.1
  dsa · libmodbus · debian · bookworm; dsa · libmodbus · debian · 12
- 3.1.6-2.1 · arm64 · bookworm
  Fixed · Fixed: 3.1.6-2.1
  dsa · libmodbus · debian · bookworm; dsa · libmodbus · debian · 12
- 3.1.6-2.1+deb12u1 · amd64 · bookworm-security
  Fixed · Fixed: 3.1.6-2.1
  dsa · libmodbus · debian · bookworm; dsa · libmodbus · debian · 12
- 3.1.6-2.1+deb12u1 · arm64 · bookworm-security
  Fixed · Fixed: 3.1.6-2.1
  dsa · libmodbus · debian · bookworm; dsa · libmodbus · debian · 12
[libmodbus-dev]Fixed
Source package: [libmodbus]
Details (4)
- 3.1.6-2.1 · amd64 · bookworm
  Fixed · Fixed: 3.1.6-2.1
  dsa · libmodbus · debian · bookworm; dsa · libmodbus · debian · 12
- 3.1.6-2.1 · arm64 · bookworm
  Fixed · Fixed: 3.1.6-2.1
  dsa · libmodbus · debian · bookworm; dsa · libmodbus · debian · 12
- 3.1.6-2.1+deb12u1 · amd64 · bookworm-security
  Fixed · Fixed: 3.1.6-2.1
  dsa · libmodbus · debian · bookworm; dsa · libmodbus · debian · 12
- 3.1.6-2.1+deb12u1 · arm64 · bookworm-security
  Fixed · Fixed: 3.1.6-2.1
  dsa · libmodbus · debian · bookworm; dsa · libmodbus · debian · 12

[Debian 13 (Trixie)]

[libmodbus5]Fixed
Source package: [libmodbus]
Details (2)
- 3.1.11-2 · amd64 · trixie
  Fixed · Fixed: 3.1.6-2.1
  dsa · libmodbus · debian · 13
- 3.1.11-2 · arm64 · trixie
  Fixed · Fixed: 3.1.6-2.1
  dsa · libmodbus · debian · 13
[libmodbus-dev]Fixed
Source package: [libmodbus]
Details (2)
- 3.1.11-2 · amd64 · trixie
  Fixed · Fixed: 3.1.6-2.1
  dsa · libmodbus · debian · 13
- 3.1.11-2 · arm64 · trixie
  Fixed · Fixed: 3.1.6-2.1
  dsa · libmodbus · debian · 13

Observed: Oct 27, 2026, 3:33:59 AM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database]