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CVE-2019-5736

HIGH
8.6NVD

Summary

generated automatically from NVD data

runc through 1.0-rc6, used in Docker before 18.09.2 and other products, mishandles file descriptors related to /proc/self/exe. An attacker who can run a command as root inside a container, either a new one built from an attacker-controlled image or an existing one reachable with docker exec, can overwrite the host runc binary. This leads to root access on the host. The flaw is rated HIGH with a CVSS v3.1 score of 8.6.

NVD description

runc through 1.0-rc6, as used in Docker before 18.09.2 and other products, allows attackers to overwrite the host runc binary (and consequently obtain host root access) by leveraging the ability to execute a command as root within one of these types of containers: (1) a new container with an attacker-controlled image, or (2) an existing container, to which the attacker previously had write access, that can be attached with docker exec. This occurs because of file-descriptor mishandling, related to /proc/self/exe.

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EPSS · FIRST.org

98.5%probability of exploitation in the next 30 days

Higher than 99% of scored CVEs

EPSS (Exploit Prediction Scoring System) estimates, from observed exploitation activity, how likely a CVE is to be exploited in the next 30 days. It complements CVSS, which measures severity, not likelihood. Score of 2026-10-19, recomputed daily by FIRST.org.

In-depth analysis on cveo.tech

We've published a detailed analysis of this CVE — exploitation, IOCs and mitigation.

CVSS v3.1 Score

8.6
/ 10.0
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Information

Published
11 févr. 2019
Updated
17 juin 2026
Status
Modified
Source
cve@mitre.org

Affected products

docker dockerAll Docker CVEs →
Versions : 18.09.2
linuxfoundation runc
Versions : 0.1.1, 1.0.0
redhat container development kit
Versions : 3.7
redhat openshift
Versions : 3.4, 3.5, 3.6, 3.7
redhat enterprise linux
Versions : 8.0
redhat enterprise linux server
Versions : 7.0
google kubernetes engine
linuxcontainers lxc
Versions : 3.2.0

Weaknesses (CWE)

CWE-78

References (132)

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