CVE-2023-25809

MEDIUMNVD 5.05.0—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.0 under NVD CVSS v3. EPSS exploit probability: 0.0%, top 89% 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).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
5.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.0Exploit: NoneExposed: 0

A fix is available — apply it.

runc is a CLI tool for spawning and running containers according to the OCI specification. In affected versions it was found that rootless runc makes /sys/fs/cgroup writable in following conditons: 1. when runc is executed inside the user namespace, and the config.json does not specify the cgroup namespace to be unshared (e.g.., (docker|podman|nerdctl) run --cgroupns=host, with Rootless Docker/Podman/nerdctl) or 2. when runc is executed outside the user namespace, and /sys is mounted with rbind, ro (e.g., runc spec --rootless; this condition is very rare). A container may gain the write access to user-owned cgroup hierarchy /sys/fs/cgroup/user.slice/... on the host . Other users's cgroup hierarchies are not affected. Users are advised to upgrade to version 1.1.5. Users unable to upgrade may unshare the cgroup namespace ((docker|podman|nerdctl) run --cgroupns=private). This is the default behavior of Docker/Podman/nerdctl on cgroup v2 hosts. or add /sys/fs/cgroup to maskedPaths.

CVSS v3
5.0
EG Score
5.0(medium)
EPSS
24.2%
KEV
Not listed

Published

March 29, 2023

Last Modified

November 21, 2024

References (4)

Vendor Advisories for CVE-2023-25809(4)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(6)

Vendor / EcosystemFixed in / PatchReleasedSource
ubunturunc (1.0.0~rc7+git20190403.029124da-0ubuntu1~16.04.4+esm4) @ xenial2026-05-25ubuntu
ubunturunc (1.1.4-0ubuntu1~22.04.3) @ jammy2026-05-25ubuntu
redhatcontainer-tools:4.0-8090020230828093056.e7857ab12023-11-14redhat
redhatcontainer-tools:rhel8-8090020230825121312.e7857ab12023-11-14redhat
redhatrunc-4:1.1.9-1.el92023-11-07redhat
redhatopenshift4/ose-vsphere-csi-driver-syncer-rhel8:v4.13.0-202304190216.p0.g6f4295b.assembly.stream2023-05-17redhat

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)
PackageVulnerable rangeFixed inDependents
github.com/opencontainers/runc—1.1.5—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(3)

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 12× 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.

Showing the most recent 100 of 107 total refreshes for this CVE.

  1. 2026-07-22 14:06 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2023-25809?
CVE-2023-25809 is a medium vulnerability published on March 29, 2023. runc is a CLI tool for spawning and running containers according to the OCI specification. In affected versions it was found that rootless runc makes /sys/fs/cgroup writable in following conditons: 1. when runc is executed inside the user namespace, and the config.json does not specify the cgroup…
When was CVE-2023-25809 disclosed?
CVE-2023-25809 was first published in the National Vulnerability Database on March 29, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-25809 actively exploited?
CVE-2023-25809 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 24.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-25809?
CVE-2023-25809 has a CVSS v3 base score of 5.0 (NVD).
How do I remediate CVE-2023-25809?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-25809, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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