How severe is CVE-2019-15163?

CVE-2019-15163 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-2019-15163 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-15163?

CVE-2019-15163 affects Tcpdump Libpcap. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-15163?

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-2019-15163 published?

CVE-2019-15163 was published on 2019-10-03 and last updated on 2026-06-17.

CVE-2019-15163

CVE-2019-15163 is a high-severity vulnerability in Tcpdump Libpcap 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: 4% (90th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Tcpdump Libpcap
Published: 2019-10-03
Last modified: 2026-06-17

Description

rpcapd/daemon.c in libpcap before 1.9.1 allows attackers to cause a denial of service (NULL pointer dereference and daemon crash) if a crypt() call fails.

Frequently asked questions

What is CVE-2019-15163?: rpcapd/daemon.c in libpcap before 1.9.1 allows attackers to cause a denial of service (NULL pointer dereference and daemon crash) if a crypt() call fails.
How severe is CVE-2019-15163?: CVE-2019-15163 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-2019-15163 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-15163?: CVE-2019-15163 affects Tcpdump Libpcap. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-15163?: 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-2019-15163 published?: CVE-2019-15163 was published on 2019-10-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:tcpdump:libpcap:*:*:*:*:*:*:*:*

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CVE-2011-1935 — Critical (CVSS 9.8): pcap-linux.c in libpcap 1.1.1 before commit ea9432fabdf4b33cbc76d9437200e028f1c47c93 when snaplen is set may truncate…
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