What is CVE-2021-33634?

CVE-2021-33634 is a medium-severity vulnerability in Openeuler Icr, classified under Improper Initialization. CVSS score: 6.3/10. Published 2023-10-29.

How severe is CVE-2021-33634?

Medium severity. CVSS v3 base score is 6.3 out of 10.

Is CVE-2021-33634 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Openeuler Icr

CVE-2021-33634

iSulad uses the lcr+lxc runtime (default) to run malicious images, which can cause DOS.

Vulnerability class: Dirty Pipe (CVE-2022-0847)

Published 2023-10-29 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.002 (10.3th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 10th percentile — 10.3% 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

Openeuler Icr
Openeuler Lcr — versions 0

Weakness classification (CWE)

CWE-665 — Improper Initialization

Public proof-of-concept exploits

ARPSyndicate/cve-scores

References

gitee.com/src-openeuler/lcr/pulls/251/files (Patch)
gitee.com/src-openeuler/lcr/pulls/257/files (Patch)
www.openeuler.org/en/security/security-bulletins/detail/ (Vendor Advisory)

Frequently asked questions

What is CVE-2021-33634?: CVE-2021-33634 is a medium-severity vulnerability in Openeuler Icr, classified under Improper Initialization. CVSS score: 6.3/10. Published 2023-10-29.
How severe is CVE-2021-33634?: Medium severity. CVSS v3 base score is 6.3 out of 10.
Is CVE-2021-33634 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.