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No exploitation reportedFix available

CVE-2021-36980

No exploitation reported by the sources we read.

  • Published2021-07-20
  • WeaknessCWE-416

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Open vSwitch (aka openvswitch) 2.11.0 through 2.15.0 has a use-after-free in decode_NXAST_RAW_ENCAP (called from ofpact_decode and ofpacts_decode) during the decoding of a RAW_ENCAP action.

Timeline

dates in UTC
  1. 2021-07-2007:15CVE publishedNVD

Versions per branch

NVD
Openvswitch
BranchAffectedFixed in
2.x≥ 2.11.0, ≤ 2.15.0no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • coreos-installerRed Hat:openshift:4.9::el8all versions · fixed in 0:0.10.0-2.rhaos4.9.el8and 4 other packages
  • dpdkSUSE:Linux Enterprise Module for Package Hub 15 SP4all versions · fixed in 18.11.9-150100.4.23.1
  • dpdkopenSUSE:Leap 15.4all versions · fixed in 18.11.9-150100.4.23.1
  • jenkinsRed Hat:openshift:4.9::el8all versions · fixed in 0:2.289.3.1630554997-1.el8
  • openshiftRed Hat:openshift:4.9::el8all versions · fixed in 0:4.9.0-202110080828.p0.git.894a78b.assembly.stream.el8and 1 other package
  • openshiftRed Hat:openshift:4.9::el7all versions · fixed in 0:4.9.0-202110080828.p0.git.894a78b.assembly.stream.el7and 1 other package
  • openvswitchUbuntu:20.04:LTSall versions · fixed in 2.13.3-0ubuntu0.20.04.2
  • openvswitchSUSE:OpenStack Cloud Crowbar 9all versions · fixed in 2.8.10-4.33.1

42 more package ranges on OSV.dev

Full record on NVD

Fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Published
2021-07-20
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-ww48-mfpv-wc3r

Frequently asked questions

What is CVE-2021-36980?

Open vSwitch (aka openvswitch) 2.11.0 through 2.15.0 has a use-after-free in decode_NXAST_RAW_ENCAP (called from ofpact_decode and ofpacts_decode) during the decoding of a RAW_ENCAP action.

Is CVE-2021-36980 actively exploited?

Active exploitation of CVE-2021-36980 has not been confirmed. Its EPSS score was 1.2% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-36980?

CVE-2021-36980 has a CVSS v3 base score of 5.5 (MEDIUM severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

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