How severe is CVE-2019-12109?

CVE-2019-12109 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-2019-12109 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-12109?

CVE-2019-12109 affects Miniupnp Project Miniupnpd. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-12109?

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-2019-12109 published?

CVE-2019-12109 was published on 2019-05-15 and last updated on 2026-06-17.

CVE-2019-12109

CVE-2019-12109 is a high-severity vulnerability in Miniupnp Project Miniupnpd 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-476.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Miniupnp Project Miniupnpd
Published: 2019-05-15
Last modified: 2026-06-17

Description

A Denial Of Service vulnerability in MiniUPnP MiniUPnPd through 2.1 exists due to a NULL pointer dereference in GetOutboundPinholeTimeout in upnpsoap.c for rem_port.

Frequently asked questions

What is CVE-2019-12109?: A Denial Of Service vulnerability in MiniUPnP MiniUPnPd through 2.1 exists due to a NULL pointer dereference in GetOutboundPinholeTimeout in upnpsoap.c for rem_port.
How severe is CVE-2019-12109?: CVE-2019-12109 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-2019-12109 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-12109?: CVE-2019-12109 affects Miniupnp Project Miniupnpd. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-12109?: 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-2019-12109 published?: CVE-2019-12109 was published on 2019-05-15 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:miniupnp_project:miniupnpd:*:*:*:*:*:*:*:*

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