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Fencer Vulns
critical 9.8

CVE-2016-7986 json

The GeoNetworking parser in tcpdump before 4.9.0 has a buffer overflow in print-geonet.c, multiple functions.

published 2017-01-28 9 y ago modified 2026-06-17 4 mo ago also EUVD-2016-8834

cvss
9.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.2%
EPSS 3.2% chance of exploitation in 30 days, percentile 88%
public exploits
0
none known

Summary

The GeoNetworking parser in tcpdump before 4.9.0 has a buffer overflow in print-geonet.c, multiple functions.

Patch / fix

  • tcpdump Debian 14, Debian 13, Debian 12 4.9.0-1

debian advisories DEBIAN-CVE-2016-7986

  • tcpdump Ubuntu 14.04 LTS 4.9.0-1ubuntu1~ubuntu14.04.1
  • tcpdump Ubuntu 16.04 LTS 4.9.0-1ubuntu1~ubuntu16.04.1

ubuntu advisories UBUNTU-CVE-2016-7986

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • tcpdump RHEL 7 14:4.9.0-5.el7

red hat advisories RHSA-2017:1871

  • libpcap SLES for SAP 12 SP2, SLES for SAP 12 SP1, SLES for Raspberry Pi 12 SP2 +8 more 1.8.1-9.1
  • tcpdump SLES for SAP 12 SP2, SLES for SAP 12 SP1, SLES for Raspberry Pi 12 SP2 +4 more 4.9.0-13.1

suse advisories SUSE-SU-2017:1110-1

  • tcpdump openSUSE Tumbleweed 4.99.1-1.2

opensuse advisories openSUSE-SU-2024:11425-1

  • tcpdump Alpine 3.24, Alpine 3.23, Alpine 3.22 +20 more 4.9.0-r0

alpine advisories ALPINE-CVE-2016-7986

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • tcpdump Arch Linux 4.9.0-1

arch linux advisories AVG-161

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2016-7986 updated cvss 6.5

tcpdump: multiple overflow issues in protocol decoding

  • Red Hat Enterprise Linux 5 tcpdump Red Hat Enterprise Linux 6 tcpdump
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Enterprise Linux Client (v. 7) tcpdump 4.9.0-5.el7 Red Hat Enterprise Linux ComputeNode (v. 7) tcpdump 4.9.0-5.el7 Red Hat Enterprise Linux Server (v. 7) tcpdump 4.9.0-5.el7 Red Hat Enterprise Linux Workstation (v. 7) tcpdump 4.9.0-5.el7
    fixed: vendor fix RHSA-2017:1871

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

3.17% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.