Is CVE-2024-36843 in the CISA KEV catalog?

No. CVE-2024-36843 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2024-36843?

CVE-2024-36843 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2024-36843?

CVE-2024-36843 has an EPSS score of 0.79% (52th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2024-36843?

Upgrade libmodbus on debian 11 to 3.1.6-2+deb11u1 or later.

CVE & CISA-KEV Catalog

CVE-2024-36843

HIGH

7.5

CVSS v3

NVD

Description

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

CWE-122Heap-based Buffer Overflow

How to fix

Remediation Available

libmodbusDebian

Fixed in:3.1.6-2+deb11u1CVE-2024-36843

Fixed in:3.1.6-2.1CVE-2024-36843

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

0.79%probability of exploitation in 30 days

52ndpercentile

Moderate risk: more likely to be exploited than 52% of all known CVEs.

References

Exploit2

Other references1

lists.debian.org

Related Vulnerabilities

Other CWE-122 (Heap-based Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2015-3113	Critical	9.8	100%	KEV	Fix
CVE-2024-26256	High	7.8	88%	-	Fix
CVE-2020-25687	Medium	5.9	87%	-	Fix
CVE-2009-3459	High	8.8	86%	KEV	Fix
CVE-2021-21017	High	8.8	86%	KEV	-
CVE-2020-25683	Medium	5.9	86%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-03.