9.6

CVE-2026-53492: containerd CRI checkpoint restore CDI annotation smuggling

Analyzed
AliasesUBUNTU-CVE-2026-53492DEBIAN-CVE-2026-53492CGA-2226-rh3q-gm7h
Published 01-07-2026Last modified 02-07-2026

Vulnerability summary

CVE-2026-53492 is a critical (CVSS 9.6) Improper Input Validation vulnerability in containerd. EPSS estimates a 0.35% chance of exploitation in the next 30 days, higher than 28.9% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 8.4, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
9.6/10
010
Critical · v3.1 (NVD)
EPSS score
0.35%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 6 · Related 6

Timeline

  1. 01-07-2026
    PublishedVulnerability first disclosed.
  2. 02-07-2026
    Last modifiedVulnerability information updated.

Description

containerd is an open-source container runtime. In Versions prior to 2.3.2, 2.2.5 and 2.1.9, the CRI implementation improperly trusts Container Device Interface (CDI) annotations found within untrusted checkpoint image metadata during container restoration. When restoring a container from a checkpoint, containerd preserves CDI-related annotations from the checkpoint archive rather than relying solely on the pod's create-time specification. This allows a user with pod creation permissions to bypass standard Kubernetes resource allocation and device plugin enforcement, injecting arbitrary CDI edits (such as device nodes and host mounts) into the restored container. Successful exploitation requires that the node has CDI enabled and contains a matching host CDI specification for the requested device; environments where CDI is disabled or lacking sensitive device specifications are not affected. This issue has been fixed in versions 2.3.2, 2.2.5 and 2.1.9.

CVSS metrics

10 scores · 8 sources · 2 versions

EPSS trend

Probability

0.35%

Chance of exploitation in the next 30 days

Percentile

29%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.35% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard199 products
  • amazon-ecs-agent< 1.105.0-r0
  • amazon-ecs-agent-fips< 1.105.0-r0
  • auditbeat-7< 7.17.29-r18
  • auditbeat-fips-7< 7.17.29-r20
  • buildctl< 0.31.0-r2
Alpine1 product
  • containerd≥ 2.1.0, < 2.3.2-r0

2 vendors · 200 products · Showing 200 of 416

References

10 links