CVE-2019-15167: The VRRP parser in tcpdump before 4.9.3 has a buffer over-read in print-vrrp.c:vrrp_print() for VRRP version 3

Q: How do I fix CVE-2019-15167?

tcpdump: upgrade to 4.9.3. Exact commands for each OS are on this page.

Q: Is CVE-2019-15167 being exploited?

CVE-2019-15167 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2019-15167 affect?

CVE-2019-15167 affects tcpdump. Severity is critical (CVSS 9.1). The VRRP parser in tcpdump before 4.9.3 has a buffer over-read in print-vrrp.c:vrrp_print() for VRRP version 3, a different vulnerability than CVE-2018-14463.

Q: How urgent is CVE-2019-15167?

Priority 53/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.1REMOTEUPGRADE

CVE-2019-15167 is a critical-severity flaw (CVSS 9.1) affecting tcpdump. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The VRRP parser in tcpdump before 4.9.3 has a buffer over-read in print-vrrp.c:vrrp_print() for VRRP version 3, a different vulnerability than CVE-2018-14463.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.1% (top 36%)
CISA exploited list	No
Weakness	CWE-125
Published	2022-08-27
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: tcpdump

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-08-27 06:15 UTCPublished CVE record published
2026-06-17 02:19 UTCUpdated Record last modified

tcpdump tcpdump UPGRADE

Affected: < 4.9.3

Fixed in: 4.9.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy tcpdump || rpm -q tcpdump || tcpdump --version

2. UPGRADE to 4.9.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade tcpdump

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade tcpdump

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2019-15167?

tcpdump: upgrade to 4.9.3. Exact commands for each OS are on this page.

Is CVE-2019-15167 being exploited?

CVE-2019-15167 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2019-15167 affect?

CVE-2019-15167 affects tcpdump. Severity is critical (CVSS 9.1). The VRRP parser in tcpdump before 4.9.3 has a buffer over-read in print-vrrp.c:vrrp_print() for VRRP version 3, a different vulnerability than CVE-2018-14463.

How urgent is CVE-2019-15167?

Priority 53/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2018-16301 HIGH 7.8 UPGRADE The command-line argument parser in tcpdump before 4.99.0 has a buffer overflow in tcpdump.c:read_infile()
CVE-2023-1801 MEDIUM 6.5 DOWNGRADE The SMB protocol decoder in tcpdump version 4.99.3 can perform an out-of-bounds write when decoding a crafted
CVE-2020-8037 HIGH 7.5 DOWNGRADE MITIGATE The ppp decapsulator in tcpdump 4.9.3 can be convinced to allocate a large amount of memory.
CVE-2020-8036 HIGH 7.5 DOWNGRADE The tok2strbuf() function in tcpdump 4.10.0-PRE-GIT was used by the SOME/IP dissector in an unsafe way.
CVE-2019-15166 LOW 1.6 UPGRADE UPGRADE lmp_print_data_link_subobjs() in print-lmp.c in tcpdump before 4.9.3 lacks certain bounds checks.

References

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