How severe is CVE-2024-36843?

CVE-2024-36843 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2024-36843 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-36843?

CVE-2024-36843 affects Libmodbus. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-36843?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2024-36843 have an EU (EUVD) identifier?

Yes. CVE-2024-36843 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-36227.

When was CVE-2024-36843 published?

CVE-2024-36843 was published on 2024-05-31 and last updated on 2026-06-17.

CVE-2024-36843

CVE-2024-36843 is a high-severity vulnerability in Libmodbus with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-122.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-36227
Weakness: CWE-122
Affected product: Libmodbus
Published: 2024-05-31
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2024-36843?: libmodbus v3.1.6 was discovered to contain a heap overflow via the modbus_mapping_free() function.
How severe is CVE-2024-36843?: CVE-2024-36843 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2024-36843 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-36843?: CVE-2024-36843 affects Libmodbus. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-36843?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2024-36843 have an EU (EUVD) identifier?: Yes. CVE-2024-36843 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-36227.
When was CVE-2024-36843 published?: CVE-2024-36843 was published on 2024-05-31 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:libmodbus:libmodbus:3.1.6:*:*:*:*:*:*:*

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