What is CVE-2025-64329?

CVE-2025-64329 is a medium-severity vulnerability in Containerd, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 5.5/10. Published 2025-11-07.

How severe is CVE-2025-64329?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Containerd

CVE-2025-64329

containerd is an open-source container runtime. Versions 1.7.28 and below, 2.0.0-beta.0 through 2.0.6, 2.1.0-beta.0 through 2.1.4, and 2.2.0-beta.0 through 2.2.0-rc.1 contain a bug in the CRI Attach implementation where a user can exhaust memory on the host due to goroutine leaks. This issue is fixed in versions 1.7.29, 2.0.7, 2.1.5 and 2.2.0. To workaround this vulnerability, users can set up an admission controller to control accesses to pods/attach resources.

Published 2025-11-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.002 (4.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 4th percentile — 4.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Containerd — versions < 1.7.29, < 2.0.7, >= 2.1.0-beta.0, < 2.1.5
Linuxfoundation Containerd — versions 2.2.0

Weakness classification (CWE)

CWE-401 — Missing Release of Memory after Effective Lifetime

References

github.com/containerd/containerd/security/advisories/GHSA-m6hq-p25p-ffr2 (Patch, Vendor Advisory)
github.com/containerd/containerd/commit/083b53cd6f19b5de7717b0ce92c11bdf95e612df (Patch)

Frequently asked questions

What is CVE-2025-64329?: CVE-2025-64329 is a medium-severity vulnerability in Containerd, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 5.5/10. Published 2025-11-07.
How severe is CVE-2025-64329?: Medium severity. CVSS v3 base score is 5.5 out of 10.