RunC allowed additional container processes via 'runc exec' to be ptraced by the pid 1 of the container. This allows the main processes of the container, if running as root, to gain access to file-descriptors of these new processes during the initialization and can lead to container escapes or modification of runC state before the process is fully placed inside the container.
CVE-2016-9962
This medium-severity CVE scores 6.4 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 77% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
A fix is available — apply it.
- CVSS v3
- 6.4
- EG Score
- 6.4(medium)
- EPSS
- 32.1%
- KEV
- Not listed
Published
January 31, 2017
Last Modified
May 13, 2026
References (32)
- cve@mitrehttp://rhn.redhat.com/errata/RHSA-2017-0116.html
- cve@mitrehttp://rhn.redhat.com/errata/RHSA-2017-0123.html
- cve@mitrehttp://rhn.redhat.com/errata/RHSA-2017-0127.html
- cve@mitrehttp://seclists.org/fulldisclosure/2017/Jan/21
- cve@mitrehttp://seclists.org/fulldisclosure/2017/Jan/29
- cve@mitrehttp://www.securityfocus.com/archive/1/540001/100/0/threaded
- cve@mitrehttp://www.securityfocus.com/bid/95361
- cve@mitrehttps://access.redhat.com/security/vulnerabilities/cve-2016-9962
- cve@mitrehttps://bugzilla.suse.com/show_bug.cgi?id=1012568#c6
- cve@mitrehttps://github.com/docker/docker/releases/tag/v1.12.6
- cve@mitrehttps://github.com/opencontainers/runc/commit/50a19c6ff828c58e5dab13830bd3dacde268afe5
- cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BQAXJMMLRU7DD2IMG47SR2K4BOFFG7FZ/
- cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FINGBFMIXBG6B6ZWYH3TMRP5V3PDBNXR/
- cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UVM7FCOQMPKOFLDTUYSS4ES76DDM56VP/
- cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WUQ3MQNEL5IBZZLMLR72Q4YDCL2SCKRK/
Patch Availability(3)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| redhat | docker-2:1.12.5-14.el7 | 2017-01-17 | redhat |
| redhat | docker-latest-0:1.12.5-14.el7 | 2017-01-17 | redhat |
| redhat | runc-0:1.0.0-1.rc2.el7 | 2017-01-17 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(1 across 1 ecosystem)
Go(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| github.com/opencontainers/runc | — | 1.0.0-rc3 | — |
All Vendor Advisories
(3)
Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
Data Freshness Timeline
(refreshed 10× in last 7d / 39× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
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Frequently asked(5)
What is CVE-2016-9962?
When was CVE-2016-9962 disclosed?
Is CVE-2016-9962 actively exploited?
What is the CVSS score of CVE-2016-9962?
How do I remediate CVE-2016-9962?
Dependency Blast Radius
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