runc through 1.0.0-rc9 has Incorrect Access Control leading to Escalation of Privileges, related to libcontainer/rootfs_linux.go. To exploit this, an attacker must be able to spawn two containers with custom volume-mount configurations, and be able to run custom images. (This vulnerability does not affect Docker due to an implementation detail that happens to block the attack.)
CVE-2019-19921
This high-severity CVE scores 7.0 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 65% 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).
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 7.0
- EG Score
- 7.0(medium)
- EG Risk
- 36(Track)EG Risk 36/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity70% × 45%Exploitation0% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS
- 35.4%
- KEV
- Not listed
Published
February 12, 2020
Last Modified
November 21, 2024
References (30)
- cve@mitrehttp://lists.opensuse.org/opensuse-security-announce/2020-02/msg00018.html
- cve@mitrehttps://access.redhat.com/errata/RHSA-2020:0688
- cve@mitrehttps://access.redhat.com/errata/RHSA-2020:0695
- cve@mitrehttps://github.com/opencontainers/runc/issues/2197
- cve@mitrehttps://github.com/opencontainers/runc/pull/2190
- cve@mitrehttps://github.com/opencontainers/runc/releases
- cve@mitrehttps://lists.debian.org/debian-lts-announce/2023/03/msg00023.html
- cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ANUGDBJ7NBUMSUFZUSKU3ZMQYZ2Z3STN/
- cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DHGVGGMKGZSJ7YO67TGGPFEHBYMS63VF/
- cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FNB2UEDIIJCRQW4WJLZOPQJZXCVSXMLD/
- cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FYVE3GB4OG3BNT5DLQHYO4M5SXX33AQ5/
- cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I6BF24VCZRFTYBTT3T7HDZUOTKOTNPLZ/
- cve@mitrehttps://security-tracker.debian.org/tracker/CVE-2019-19921
- cve@mitrehttps://security.gentoo.org/glsa/202003-21
- cve@mitrehttps://usn.ubuntu.com/4297-1/
Vendor Advisories for CVE-2019-19921(5)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
- RHSA-2020:1650Red Hat Product SecurityMedium
Red Hat Security Advisory: container-tools:rhel8 security, bug fix, and enhancement update
- RHSA-2020:1485Red Hat Product SecurityMedium
Red Hat Security Advisory: OpenShift Container Platform 4.3.13 runc security update
- RHSA-2020:0942Red Hat Product SecurityMedium
Red Hat Security Advisory: runc security update
- RHSA-2020:0695Red Hat Product SecurityMedium
Red Hat Security Advisory: OpenShift Container Platform 4.1.38 security update
- RHSA-2020:0688Red Hat Product SecurityMedium
Red Hat Security Advisory: OpenShift Container Platform 4.2.22 runc security update
Patch Availability(7)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | runc (1.0.0~rc10-0ubuntu1~19.10.2) @ eoan | 2026-05-27 | ubuntu |
| ubuntu | runc (1.0.0~rc7+git20190403.029124da-0ubuntu1~16.04.4+esm4) @ xenial | 2026-05-27 | ubuntu |
| redhat | container-tools:rhel8-8020020200324071414.0d58ad57 | 2020-04-28 | redhat |
| redhat | runc-0:1.0.0-66.rc10.rhaos4.3.el7_8 | 2020-04-20 | redhat |
| redhat | runc-0:1.0.0-66.rc8.el7_7 | 2020-03-23 | redhat |
| redhat | runc-0:1.0.0-63.rc8.rhaos4.1.git3cbe540.el8_0 | 2020-03-12 | redhat |
| redhat | runc-0:1.0.0-63.rc10.rhaos4.2.gitdc9208a.el8 | 2020-03-10 | 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-rc9.0.20200122160610-2fc03cc11c77 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Additional Vendor Advisories
(2)
Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.
Data Freshness Timeline
(refreshed 15× in last 7d / 47× 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.
- 2026-07-23 01:43 UTCEG score recompute
- 2026-07-22 22:23 UTCEG score recompute
- 2026-07-22 14:05 UTCEPSS rescore
- 2026-07-21 15:22 UTCEPSS rescore
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- 2026-07-20 17:04 UTCEPSS rescore
- 2026-07-20 17:04 UTCEPSS rescore
- 2026-07-19 19:48 UTCOSV refresh
- 2026-07-19 14:28 UTCEPSS rescore
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- 2026-07-08 15:11 UTCEPSS rescore
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- 2026-07-06 02:20 UTCEPSS rescore
- 2026-07-05 02:27 UTCEPSS rescore
- 2026-07-04 06:28 UTCEPSS rescore
- 2026-07-02 10:17 UTCOSV refresh
- 2026-07-01 15:03 UTCEPSS rescore
- 2026-07-01 15:03 UTCEPSS rescore
- 2026-06-30 23:20 UTCEPSS rescore
- 2026-06-29 14:03 UTCEPSS rescore
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- 2026-06-21 14:54 UTCEPSS rescore
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- 2026-06-15 17:45 UTCEPSS rescore
- 2026-06-14 23:15 UTCEPSS rescore
- 2026-06-14 23:15 UTCEPSS rescore
- 2026-06-14 09:13 UTCOSV refresh
- 2026-06-13 22:58 UTCEPSS rescore
- 2026-06-12 23:09 UTCEPSS rescore
- 2026-06-11 13:58 UTCEPSS rescore
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- 2026-06-06 13:45 UTCEPSS rescore
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- 2026-06-04 13:10 UTCEPSS rescore
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- 2026-06-02 20:11 UTCEPSS rescore
- 2026-06-02 20:11 UTCEPSS rescore
- 2026-06-01 13:50 UTCEPSS rescore
- 2026-06-01 13:50 UTCEPSS rescore
- 2026-05-31 22:29 UTCEPSS rescore
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- 2026-05-29 13:42 UTCEPSS rescore
- 2026-05-28 13:43 UTCEPSS rescore
- 2026-05-27 13:38 UTCEPSS rescore
- 2026-05-27 07:50 UTCEG score recompute
- 2026-05-27 07:50 UTCVendor advisory
- 2026-05-26 13:42 UTCEPSS rescore
- 2026-05-26 13:42 UTCEPSS rescore
- 2026-05-26 07:17 UTCEPSS rescore
- 2026-05-26 07:17 UTCEPSS rescore
- 2026-05-26 07:17 UTCEPSS rescore
- 2026-05-23 07:01 UTCOSV refresh
Frequently asked(5)
What is CVE-2019-19921?
When was CVE-2019-19921 disclosed?
Is CVE-2019-19921 actively exploited?
What is the CVSS score of CVE-2019-19921?
How do I remediate CVE-2019-19921?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2019-19921
Is Your Infrastructure Affected by CVE-2019-19921?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.