CVE-2019-15166

CVE-2019-15166 is a low-severity vulnerability in Tcpdump with a CVSS 3.x base score of 1.6. 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-120.

Key facts

• Severity: Low (CVSS 3.x base score 1.6)
• CVSS v2: 5.0
• EPSS exploit prediction: 5% (91st percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-120
• Affected product: Tcpdump
• Published: 2019-10-03
• Last modified: 2026-06-17

Description

lmp_print_data_link_subobjs() in print-lmp.c in tcpdump before 4.9.3 lacks certain bounds checks.

Frequently asked questions

What is CVE-2019-15166?

lmp_print_data_link_subobjs() in print-lmp.c in tcpdump before 4.9.3 lacks certain bounds checks.

How severe is CVE-2019-15166?

CVE-2019-15166 has a CVSS 3.x base score of 1.6, rated low severity. It is exploitable over physical access with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2019-15166 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-15166?

CVE-2019-15166 primarily affects Tcpdump. In total, 19 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-15166?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2019-15166 published?

CVE-2019-15166 was published on 2019-10-03 and last updated on 2026-06-17.

References

• http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00050.html
• http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00053.html
• http://seclists.org/fulldisclosure/2019/Dec/26
• https://github.com/the-tcpdump-group/tcpdump/blob/tcpdump-4.9/CHANGES
• https://github.com/the-tcpdump-group/tcpdump/commit/0b661e0aa61850234b64394585cf577aac570bf4
• https://lists.debian.org/debian-lts-announce/2019/10/msg00015.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/62XY42U6HY3H2APR5EHNWCZ7SAQNMMJN/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FNYXF3IY2X65IOD422SA6EQUULSGW7FN/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R2UDPOSGVJQIYC33SQBXMDXHH4QDSDMU/
• https://seclists.org/bugtraq/2019/Dec/23
• https://seclists.org/bugtraq/2019/Oct/28
• https://security.netapp.com/advisory/ntap-20200120-0001/
• https://support.apple.com/kb/HT210788
• https://usn.ubuntu.com/4252-1/
• https://usn.ubuntu.com/4252-2/
• https://www.debian.org/security/2019/dsa-4547

Affected products (19)

• cpe:2.3:a:tcpdump:tcpdump:*:*:*:*:*:*:*:*
• cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
• cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*
• cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
• cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
• cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*
• cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
• cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
• cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:*
• cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*

More vulnerabilities in Tcpdump

• CVE-2018-10105 — Critical (CVSS 9.8): tcpdump before 4.9.3 mishandles the printing of SMB data (issue 2 of 2).
• CVE-2018-10103 — Critical (CVSS 9.8): tcpdump before 4.9.3 mishandles the printing of SMB data (issue 1 of 2).
• CVE-2017-13725 — Critical (CVSS 9.8): The IPv6 routing header parser in tcpdump before 4.9.2 has a buffer over-read in print-rt6.c:rt6_print().
• CVE-2017-13690 — Critical (CVSS 9.8): The IKEv2 parser in tcpdump before 4.9.2 has a buffer over-read in print-isakmp.c, several functions.
• CVE-2017-13689 — Critical (CVSS 9.8): The IKEv1 parser in tcpdump before 4.9.2 has a buffer over-read in print-isakmp.c:ikev1_id_print().
• CVE-2017-13688 — Critical (CVSS 9.8): The OLSR parser in tcpdump before 4.9.2 has a buffer over-read in print-olsr.c:olsr_print().

All CVEs affecting Tcpdump →

Other CWE-120 (Classic Buffer Overflow) vulnerabilities

• CVE-2025-48611 — Critical (CVSS 10.0): In DeviceId of DeviceId.java, there is a possible desync in persistence due to a missing bounds check. This could lead…
• CVE-2026-24823 — Critical (CVSS 10.0): Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in FASTSHIFT…
• CVE-2026-24810 — Critical (CVSS 10.0): Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in rethinkdb (src/cjson modules).…
• CVE-2026-24800 — Critical (CVSS 10.0): Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in tildearrow…
• CVE-2025-9962 — Critical (CVSS 10.0): A buffer overflow vulnerability in Novakon P series allows attackers to gain root permission without prior…
• CVE-2010-10016 — Critical (CVSS 10.0): BS.Player version 2.57 (build 1051) contains a vulnerability in its playlist import functionality. When processing .m3u…

Browse all CWE-120 (Classic Buffer Overflow) vulnerabilities →