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Fencer Intel
critical 9.8

CVE-2016-2074 json

Buffer overflow in lib/flow.c in ovs-vswitchd in Open vSwitch 2.2.x and 2.3.x before 2.3.3 and 2.4.x before 2.4.1 allows remote attackers t…

published 2016-07-03 10 y ago modified 2026-06-17 4 mo ago also EUVD-2016-3179

cvss
9.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
6.4%
EPSS 6.4% chance of exploitation in 30 days, percentile 93%
public exploits
0
none known

Summary

Buffer overflow in lib/flow.c in ovs-vswitchd in Open vSwitch 2.2.x and 2.3.x before 2.3.3 and 2.4.x before 2.4.1 allows remote attackers to execute arbitrary code via crafted MPLS packets, as demonstrated by a long string in an ovs-appctl command.

Patch / fix

  • openvswitch Debian 14, Debian 13, Debian 12 2.3.0+git20140819-4

debian advisories DEBIAN-CVE-2016-2074

  • openvswitch openstack 7, openstack 6, openstack 5 +1 more 2.4.0-2.el7_2
  • openvswitch-dpdk openstack 7 2.4.0-0.10346.git97bab959.3.el7_2
  • python-openvswitch openstack 7, openstack 6, openstack 5 +1 more 2.4.0-2.el7_2
  • openvswitch-test openshift 3.1 2.4.0-2.el7_2

red hat advisories RHSA-2016:0537RHSA-2016:0524RHSA-2016:0523RHSA-2016:0615

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-2016-2074 updated cvss 7.4

openvswitch: MPLS buffer overflow vulnerability

  • Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 7 openvswitch 2.4.0-2.el7_2, python-openvswitch 2.4.0-2.el7_2
    fixed: vendor fix RHSA-2016:0523
  • Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7 openvswitch 2.4.0-2.el7_2, python-openvswitch 2.4.0-2.el7_2
    fixed: vendor fix RHSA-2016:0524
  • Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7 openvswitch 2.4.0-2.el7_2, python-openvswitch 2.4.0-2.el7_2, openvswitch-dpdk 2.4.0-0.10346.git97bab959.3.el7_2
    fixed: vendor fix RHSA-2016:0537
  • Red Hat OpenShift Enterprise 3.1 openvswitch 2.4.0-2.el7_2, openvswitch-test 2.4.0-2.el7_2, python-openvswitch 2.4.0-2.el7_2
    fixed: vendor fix RHSA-2016:0615
  • Red Hat OpenStack Platform 8 (Liberty) openvswitch, openvswitch-dpdk, python-openvswitch
    not affected: vulnerable code not present

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

6.40% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-09).

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 Intel 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.