CVE-2021-3520
CriticalAdvisory
Published 30 Apr 2021In the index since 5 Sept 2026
- Severity
- Critical
- worst across findings
- CVSS
- 9.8
- base score, highest
- EPSS
- 0.032
- 87th percentile
- CISA KEV
- Not listed
- no confirmed exploitation
- Charts affected
- 753
- of 17,787 indexed, latest versions
- Container images
- 555
- deployed by those charts
- Fix available
- 3 of 3
- affected packages
Red Hat Security Advisory: lz4 security update
Carried by container images the latest versions of 753 of 17,787 indexed charts deploy, on 555 images.
| Affected package | Affected versions | Fixed in | Images |
|---|---|---|---|
| lz4deb | 0.0~r131-2+b1, 0.0~r131-2ubuntu2, 0.0~r131-2ubuntu3, 1.8.3-1+1 more | 0.0~r131-2+deb9u1, 0.0~r131-2ubuntu2+esm1, 0.0~r131-2ubuntu3.1, 1.8.3-1+deb10u1+1 more | 511 |
| lz4apk | 1.9.2-r0, 1.9.3-r0 | 1.9.2-r1, 1.9.3-r1 | 5 |
| lz4rpm | 1.8.0-3.5.1, 1.8.0-lp151.3.3.1, 1.8.1.2-4.el8, 1.8.3-2.el8 | 0:1.8.3-3.el8_4, 1.8.0-3.8.1, 1.9.3-2.1 | 39 |
- OSV records
- ALPINE-CVE-2021-3520UBUNTU-CVE-2021-3520RHSA-2021:2575DLA-2657-1DSA-4919-1openSUSE-SU-2024:11562-1SUSE-SU-2021:1647-1
- Also known as
- USN-4968-1, USN-4968-2
Charts affected
753 by stars
Container images carrying it
555 by charts deploying them
A fixed version is listed for 3 of the 3 affected packages.
| Container image | Digest | Package | Fixed in | Used by |
|---|---|---|---|---|
| quay.io/ | 9a8d95ca0bd9 | lz4 | 1.8.3-1+deb10u1 | 1 |
| quay.io/ | c6a934439421 | lz4 | 0.0~r131-2ubuntu2+esm1 | 1 |
| registry.gitlab.com/ | cf72810d33f5 | lz4 | 0:1.8.3-3.el8_4 | 1 |
| registry.gitlab.com/ | f6385712935f | lz4 | 1.9.2-2ubuntu0.20.04.1 | 1 |
| registry.gitlab.com/ | f21f19346b29 | lz4 | 1.8.3-1+deb10u1 | 1 |