CVE-2019-19921

No known exploitation. EPSS puts it in the 35th percentile. A vendor fix is available.

CVSS 3.17.0High EPSS percentile35th0.4% chance in 30 days CISA KEVNot listedNo confirmed exploitation
No public exploit known FixVendor fixNo build named by the sources

Published 2020-02-12Updated 2024-11-21Sources: CVE.org, NVD, GitHub

NVD CVE.org

What to do

The vendor has published a fix. Version details are below where the sources state them.

Check it yourselfA free OpenVAS check exists for this CVE. Run it against your hosts.Is your organisation exposed?Request an assessment to establish which checks fit your systems.

What it is

From the CVE record

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.)

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS35th

CISA KEV

Not in the catalog. CISA has not confirmed exploitation.

Public exploits

No public exploit or proof of concept found in the sources we track.

EPSS

0.4% chance of exploitation activity in the next 30 days, which ranks it in the 35th percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

5 events over 2325 days, from the signal feeds we watch.

2026-06-25OpenVAS check added
2024-11-21Patch availablerecord updated
2020-02-12Publishedweakness classified

Affected products

linuxfoundationoss-project · USaka everest, pytorch, yocto
- runcLibraryLibraryAI / ML
debianoss-project · GBaka debian gnu/linux
- debian linuxOSOn-premOperating Systems / linux-distro
opensuseoss-project · DE
- leapOSOn-premOperating Systems / linux-distro
canonicalcommercial · GBaka canonical ltd.
- ubuntu linuxOSOn-premOperating Systems / linux-distro
redhatcommercial · USaka red hat
- openshift container platformOn-premOperating Systems / linux-distro
Gopackage-ecosystem
- github.com/opencontainers/runcOSS Libraries

And 1 more affected product. See all after sign-in

Technical detail

CVSS 3.1 vector

Open in the CVSS calculator

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Scored 7.0 by NVD.

How it is reached

Attack Vector LocalRequires local access to the vulnerable system (e.g. local login, malicious file)
Attack Complexity HighRequires specific conditions like a race condition or non-default configuration
Privileges Required LowRequires basic user-level privileges
User Interaction NoneNo user interaction needed — fully automated exploitation

Scope

Scope UnchangedImpact is limited to the vulnerable component itself

Impact if exploited

Confidentiality HighTotal information disclosure — all data in the component is compromised
Integrity HighTotal loss of integrity — attacker can modify any data in the component
Availability HighTotal denial of service — the component is completely unavailable

Weaknesses

CWE-706No name in the record

Sources

References in the record

And 23 more references. See all after sign-in

Watch the software you run.

My Stack ranks new CVEs for your products by real-world exploitation, so the next serious one reaches you without reading every advisory.

We'll flag the next CVE, public exploit or patch for Runc, not every advisory.

A free account adds

The full version matrix and every affected product
Exploit links, proofs of concept and Metasploit modules
Email alerts for the products you watch
The same data over REST API, MCP and CLI

Create a free account