How severe is CVE-2019-12480?

CVE-2019-12480 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-2019-12480 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 34% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-12480?

CVE-2019-12480 affects Bacnet Protocol Stack Project Bacnet Protocol Stack. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-12480?

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.

When was CVE-2019-12480 published?

CVE-2019-12480 was published on 2019-05-30 and last updated on 2026-06-17.

CVE-2019-12480

CVE-2019-12480 is a high-severity vulnerability in Bacnet Protocol Stack Project Bacnet Protocol Stack with a CVSS 3.x base score of 7.5. Its EPSS exploit-prediction score of 34% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-125.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 34% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-125
Affected product: Bacnet Protocol Stack Project Bacnet Protocol Stack
Published: 2019-05-30
Last modified: 2026-06-17

Description

BACnet Protocol Stack through 0.8.6 has a segmentation fault leading to denial of service in BACnet APDU Layer because a malformed DCC in AtomicWriteFile, AtomicReadFile and DeviceCommunicationControl services. An unauthenticated remote attacker could cause a denial of service (bacserv daemon crash) because there is an invalid read in bacdcode.c during parsing of alarm tag numbers.

Frequently asked questions

What is CVE-2019-12480?: BACnet Protocol Stack through 0.8.6 has a segmentation fault leading to denial of service in BACnet APDU Layer because a malformed DCC in AtomicWriteFile, AtomicReadFile and DeviceCommunicationControl services. An unauthenticated remote attacker could cause a denial of service (bacserv daemon crash) because there is an invalid read in bacdcode.c during parsing of alarm tag numbers.
How severe is CVE-2019-12480?: CVE-2019-12480 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-2019-12480 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 34% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-12480?: CVE-2019-12480 affects Bacnet Protocol Stack Project Bacnet Protocol Stack. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-12480?: 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.
When was CVE-2019-12480 published?: CVE-2019-12480 was published on 2019-05-30 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:bacnet_protocol_stack_project:bacnet_protocol_stack:*:*:*:*:*:*:*:*

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