CVE catalog
CVE-2021-33120
intel-microcode: CVE-2021-33120
- Severity
- Low · CVSS 3.6
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:L - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.95% · Oct 25, 2026
Out of bounds read under complex microarchitectural condition in memory subsystem for some Intel Atom(R) Processors may allow authenticated user to potentially enable information disclosure or cause denial of service via network access.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | intel-microcode | sid | 3.20260227.1 | fixed |
| Debian | intel-microcode | forky | 3.20260227.1 | fixed |
| Debian | intel-microcode | trixie | 3.20251111.1~deb13u1 | fixed |
| Debian | intel-microcode | trixie-security | 3.20250812.1~deb13u1 | fixed |
| Debian | intel-microcode | bookworm | 3.20251111.1~deb12u1 | fixed |
| Debian | intel-microcode | bookworm-security | 3.20250812.1~deb12u1 | fixed |
| Ubuntu | intel-microcode | pro | 3.20150121.1 | vulnerable |
| Ubuntu | intel-microcode | pro | 3.20151106.1 | vulnerable |
| Ubuntu | intel-microcode | pro | 3.20170707.1~ubuntu16.04.0 | vulnerable |
| Ubuntu | intel-microcode | pro | 3.20180108.0~ubuntu16.04.2 | vulnerable |
| Ubuntu | intel-microcode | pro | 3.20180108.0+really20170707ubuntu16.04.1 | vulnerable |
| Ubuntu | intel-microcode | pro | 3.20180312.0~ubuntu16.04.1 | vulnerable |
| Ubuntu | intel-microcode | pro | 3.20180425.1~ubuntu0.16.04.1 | vulnerable |
| Ubuntu | intel-microcode | pro | 3.20180425.1~ubuntu0.16.04.2 | vulnerable |
| Ubuntu | intel-microcode | pro | 3.20180807a.0ubuntu0.16.04.1 | vulnerable |
| Ubuntu | intel-microcode | pro | 3.20190514.0ubuntu0.16.04.1 | vulnerable |
| Ubuntu | intel-microcode | pro | 3.20190514.0ubuntu0.16.04.2 | vulnerable |
| Ubuntu | intel-microcode | pro | 3.20190618.0ubuntu0.16.04.1 | vulnerable |
| Ubuntu | intel-microcode | pro | 3.20191112-0ubuntu0.16.04.2 | vulnerable |
| Ubuntu | intel-microcode | pro | 3.20191115.1ubuntu0.16.04.1 | vulnerable |
| Ubuntu | intel-microcode | pro | 3.20191115.1ubuntu0.16.04.2 | vulnerable |
| Ubuntu | intel-microcode | pro | 3.20200609.0ubuntu0.16.04.0 | vulnerable |
| Ubuntu | intel-microcode | pro | 3.20200609.0ubuntu0.16.04.1 | vulnerable |
| Ubuntu | intel-microcode | pro | 3.20201110.0ubuntu0.16.04.1 | vulnerable |
| Ubuntu | intel-microcode | pro | 3.20201110.0ubuntu0.16.04.2 | vulnerable |
| Ubuntu | intel-microcode | pro | 3.20210216.0ubuntu0.16.04.1 | vulnerable |
| Ubuntu | intel-microcode | pro | 3.20210608.0ubuntu0.16.04.1+esm1 | vulnerable |
| Ubuntu | intel-microcode | pro | 3.20220510.0ubuntu0.16.04.1+esm1 | fixed |
| Ubuntu | intel-microcode | 18.04 | 3.20170707.1 | vulnerable |
| Ubuntu | intel-microcode | 18.04 | 3.20171117.1 | vulnerable |
| Ubuntu | intel-microcode | 18.04 | 3.20180108.1 | vulnerable |
| Ubuntu | intel-microcode | 18.04 | 3.20180108.1+really20171117.1 | vulnerable |
| Ubuntu | intel-microcode | 18.04 | 3.20180312.0~ubuntu18.04.1 | vulnerable |
| Ubuntu | intel-microcode | 18.04 | 3.20180425.1~ubuntu0.18.04.1 | vulnerable |
| Ubuntu | intel-microcode | 18.04 | 3.20180425.1~ubuntu0.18.04.2 | vulnerable |
| Ubuntu | intel-microcode | 18.04 | 3.20180807a.0ubuntu0.18.04.1 | vulnerable |
| Ubuntu | intel-microcode | 18.04 | 3.20190514.0ubuntu0.18.04.2 | vulnerable |
| Ubuntu | intel-microcode | 18.04 | 3.20190514.0ubuntu0.18.04.3 | vulnerable |
| Ubuntu | intel-microcode | 18.04 | 3.20190618.0ubuntu0.18.04.1 | vulnerable |
| Ubuntu | intel-microcode | 18.04 | 3.20191112-0ubuntu0.18.04.2 | vulnerable |
| Ubuntu | intel-microcode | 18.04 | 3.20191115.1ubuntu0.18.04.1 | vulnerable |
| Ubuntu | intel-microcode | 18.04 | 3.20191115.1ubuntu0.18.04.2 | vulnerable |
| Ubuntu | intel-microcode | 18.04 | 3.20200609.0ubuntu0.18.04.0 | vulnerable |
| Ubuntu | intel-microcode | 18.04 | 3.20200609.0ubuntu0.18.04.1 | vulnerable |
| Ubuntu | intel-microcode | 18.04 | 3.20201110.0ubuntu0.18.04.1 | vulnerable |
| Ubuntu | intel-microcode | 18.04 | 3.20201110.0ubuntu0.18.04.2 | vulnerable |
| Ubuntu | intel-microcode | 18.04 | 3.20210216.0ubuntu0.18.04.1 | vulnerable |
| Ubuntu | intel-microcode | 18.04 | 3.20210608.0ubuntu0.18.04.1 | vulnerable |
| Ubuntu | intel-microcode | 18.04 | 3.20220510.0ubuntu0.18.04.1 | fixed |
| Ubuntu | intel-microcode | 20.04 | 3.20190918.1ubuntu1 | vulnerable |
| Ubuntu | intel-microcode | 20.04 | 3.20191115.1ubuntu1 | vulnerable |
| Ubuntu | intel-microcode | 20.04 | 3.20191115.1ubuntu2 | vulnerable |
| Ubuntu | intel-microcode | 20.04 | 3.20191115.1ubuntu3 | vulnerable |
| Ubuntu | intel-microcode | 20.04 | 3.20200609.0ubuntu0.20.04.0 | vulnerable |
| Ubuntu | intel-microcode | 20.04 | 3.20200609.0ubuntu0.20.04.1 | vulnerable |
| Ubuntu | intel-microcode | 20.04 | 3.20200609.0ubuntu0.20.04.2 | vulnerable |
| Ubuntu | intel-microcode | 20.04 | 3.20201110.0ubuntu0.20.04.1 | vulnerable |
| Ubuntu | intel-microcode | 20.04 | 3.20201110.0ubuntu0.20.04.2 | vulnerable |
| Ubuntu | intel-microcode | 20.04 | 3.20210216.0ubuntu0.20.04.1 | vulnerable |
| Ubuntu | intel-microcode | 20.04 | 3.20210608.0ubuntu0.20.04.1 | vulnerable |
| Ubuntu | intel-microcode | 20.04 | 3.20220510.0ubuntu0.20.04.1 | fixed |
| Ubuntu | intel-microcode | 22.04 | 3.20210608.2ubuntu1 | vulnerable |
| Ubuntu | intel-microcode | 22.04 | 3.20220510.0ubuntu0.22.04.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | intel-microcode | source | sid | 3.20220207.1 | not yet assigned | Not reported | Not reported |
| Debian | intel-microcode | source | forky | 3.20220207.1 | not yet assigned | Not reported | Not reported |
| Debian | intel-microcode | source | trixie | 3.20220207.1 | not yet assigned | Not reported | Not reported |
| Debian | intel-microcode | source | bookworm | 3.20220207.1 | not yet assigned | Not reported | Not reported |
| Ubuntu | intel-microcode | deb | pro | 3.20220510.0ubuntu0.16.04.1+esm1 | Not reported | UBUNTU-CVE-2021-33120 | Not reported |
| Ubuntu | intel-microcode | deb | 18.04 | 3.20220510.0ubuntu0.18.04.1 | Not reported | UBUNTU-CVE-2021-33120 | Not reported |
| Ubuntu | intel-microcode | deb | 20.04 | 3.20220510.0ubuntu0.20.04.1 | Not reported | UBUNTU-CVE-2021-33120 | Not reported |
| Ubuntu | intel-microcode | deb | 22.04 | 3.20220510.0ubuntu0.22.04.1 | Not reported | UBUNTU-CVE-2021-33120 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [intel-microcode]Fixed
Details (1)
3.20251111.1~deb12u1· amd64 · bookwormFixed · Fixed:
3.20220207.1dsa · intel-microcode · debian · bookworm; dsa · intel-microcode · debian · 12
[Debian 13 (Trixie)]
- [intel-microcode]Fixed
Details (1)
3.20251111.1~deb13u1· amd64 · trixieFixed · Fixed:
3.20220207.1dsa · intel-microcode · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2022_0502-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2021-33120]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2021-33120]
- [https://security-tracker.debian.org/tracker/CVE-2021-33120]
- [https://wid.cert-bund.de/.well-known/csaf/white/2022/wid-sec-w-2022-0391.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]