How severe is CVE-2019-12107?

CVE-2019-12107 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 high, integrity none, and availability none.

Is CVE-2019-12107 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-12107?

CVE-2019-12107 affects Miniupnp.free Miniupnpd. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-12107?

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-2019-12107 published?

CVE-2019-12107 was published on 2019-05-15 and last updated on 2026-06-17.

CVE-2019-12107

CVE-2019-12107 is a high-severity vulnerability in Miniupnp.free 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-252.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 3% (86th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-252
Affected product: Miniupnp.free Miniupnpd
Published: 2019-05-15
Last modified: 2026-06-17

Description

The upnp_event_prepare function in upnpevents.c in MiniUPnP MiniUPnPd through 2.1 allows a remote attacker to leak information from the heap due to improper validation of an snprintf return value.

Frequently asked questions

What is CVE-2019-12107?: The upnp_event_prepare function in upnpevents.c in MiniUPnP MiniUPnPd through 2.1 allows a remote attacker to leak information from the heap due to improper validation of an snprintf return value.
How severe is CVE-2019-12107?: CVE-2019-12107 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 high, integrity none, and availability none.
Is CVE-2019-12107 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-12107?: CVE-2019-12107 affects Miniupnp.free Miniupnpd. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-12107?: 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-2019-12107 published?: CVE-2019-12107 was published on 2019-05-15 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:miniupnp.free:miniupnpd:*:*:*:*:*:*:*:*

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