How severe is CVE-2019-11490?

CVE-2019-11490 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-11490 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-11490?

CVE-2019-11490 affects Nmap Npcap. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-11490?

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-2019-11490 published?

CVE-2019-11490 was published on 2019-04-24 and last updated on 2026-06-17.

CVE-2019-11490

CVE-2019-11490 is a high-severity vulnerability in Nmap Npcap with a CVSS 3.x base score of 7.8. 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-415.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 7.2
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-415
Affected product: Nmap Npcap
Published: 2019-04-24
Last modified: 2026-06-17

Description

An issue was discovered in Npcap 0.992. Sending a malformed .pcap file with the loopback adapter using either pcap_sendqueue_queue() or pcap_sendqueue_transmit() results in kernel pool corruption. This could lead to arbitrary code executing inside the Windows kernel and allow escalation of privileges.

Frequently asked questions

What is CVE-2019-11490?: An issue was discovered in Npcap 0.992. Sending a malformed .pcap file with the loopback adapter using either pcap_sendqueue_queue() or pcap_sendqueue_transmit() results in kernel pool corruption. This could lead to arbitrary code executing inside the Windows kernel and allow escalation of privileges.
How severe is CVE-2019-11490?: CVE-2019-11490 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-11490 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-11490?: CVE-2019-11490 affects Nmap Npcap. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-11490?: 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-2019-11490 published?: CVE-2019-11490 was published on 2019-04-24 and last updated on 2026-06-17.

References

https://github.com/nmap/nmap/issues/1568

Affected products (1)

cpe:2.3:a:nmap:npcap:0.992:*:*:*:*:*:*:*

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