CVE-2021-0127

Insufficient control flow management in some Intel(R) Processors may allow an authenticated user to potentially enable a denial of service via local access.

Published: 2022-02-09 Last update: 2025-05-05 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-0127 is rated Low Risk (28.8/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.07%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2021-0127

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-17 0.04% 0.07% +0.03%
2 2023-03-07 0.89% 0.04% -0.84%
3 2022-02-10 — 0.89% —

Full EPSS history (3 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-0127

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.5 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 3.6 [email protected]
5.5 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 3.6 134c704f-9b21-4f2e-91b3-4a467353bcc0
2.1 2.0 LOW
AV:L/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 3.9 2.9 [email protected]

Weakness enumeration for CVE-2021-0127

OS Trackers for CVE-2021-0127

vendor priority summary link
alpine — CVE-2021-0127: 1 source package rows (intel-ucode); 7 state rows across 7 repos (3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 7, open 0. https://security.alpinelinux.org/vuln/CVE-2021-0127
debian not yet assigned CVE-2021-0127 not yet assigned priority: Debian including 1 source packages (intel-microcode), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2021-0127
gentoo high CVE-2021-0127: 1 GLSA(s) (202402-22), 1 atom(s) (sys-firmware/intel-microcode); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2021-0127
redhat medium — https://access.redhat.com/security/cve/CVE-2021-0127
suse medium CVE-2021-0127 severity moderate: SUSE including 13 source package names (microcode_ctl-1.17-102.83.75.2, ucode-intel-20220207-1.1, …), 73 product×package rows across 73 product lines (HPE Helion OpenStack 8, Image SLES12-SP5-SAP-Azure-LI-BYOS-Production, … (73 product lines)): Fixed 73. https://www.suse.com/security/cve/CVE-2021-0127/
ubuntu medium CVE-2021-0127 medium priority: Ubuntu including 1 source packages (intel-microcode), 8 status rows across 8 suites (bionic, focal, impish, jammy, kinetic, trusty, upstream, xenial): released 7, ignored 1. https://ubuntu.com/security/CVE-2021-0127

Affected software / configurations for CVE-2021-0127

Vendor Product Version Raw CPE
netapp clustered_data_ontap — cpe:2.3:a:netapp:clustered_data_ontap:-:*:*:*:*:*:*:*
intel celeron_g1610 — cpe:2.3:h:intel:celeron_g1610:-:*:*:*:*:*:*:*
intel celeron_g1610t — cpe:2.3:h:intel:celeron_g1610t:-:*:*:*:*:*:*:*
intel celeron_g1620 — cpe:2.3:h:intel:celeron_g1620:-:*:*:*:*:*:*:*
intel celeron_g1620t — cpe:2.3:h:intel:celeron_g1620t:-:*:*:*:*:*:*:*
intel celeron_g1630 — cpe:2.3:h:intel:celeron_g1630:-:*:*:*:*:*:*:*
intel celeron_g1820 — cpe:2.3:h:intel:celeron_g1820:-:*:*:*:*:*:*:*
intel celeron_g1820t — cpe:2.3:h:intel:celeron_g1820t:-:*:*:*:*:*:*:*
intel celeron_g1820te — cpe:2.3:h:intel:celeron_g1820te:-:*:*:*:*:*:*:*
intel celeron_g1830 — cpe:2.3:h:intel:celeron_g1830:-:*:*:*:*:*:*:*
intel celeron_g3930e — cpe:2.3:h:intel:celeron_g3930e:-:*:*:*:*:*:*:*
intel celeron_g3930te — cpe:2.3:h:intel:celeron_g3930te:-:*:*:*:*:*:*:*
intel core_i3-1000g1 — cpe:2.3:h:intel:core_i3-1000g1:-:*:*:*:*:*:*:*
intel core_i3-1000g4 — cpe:2.3:h:intel:core_i3-1000g4:-:*:*:*:*:*:*:*
intel core_i3-1005g1 — cpe:2.3:h:intel:core_i3-1005g1:-:*:*:*:*:*:*:*
intel core_i3-10100 — cpe:2.3:h:intel:core_i3-10100:-:*:*:*:*:*:*:*
intel core_i3-10100e — cpe:2.3:h:intel:core_i3-10100e:-:*:*:*:*:*:*:*
intel core_i3-10100f — cpe:2.3:h:intel:core_i3-10100f:-:*:*:*:*:*:*:*
intel core_i3-10100t — cpe:2.3:h:intel:core_i3-10100t:-:*:*:*:*:*:*:*
intel core_i3-10100te — cpe:2.3:h:intel:core_i3-10100te:-:*:*:*:*:*:*:*
intel core_i3-10100y — cpe:2.3:h:intel:core_i3-10100y:-:*:*:*:*:*:*:*
intel core_i3-10105 — cpe:2.3:h:intel:core_i3-10105:-:*:*:*:*:*:*:*
intel core_i3-10105f — cpe:2.3:h:intel:core_i3-10105f:-:*:*:*:*:*:*:*
intel core_i3-10105t — cpe:2.3:h:intel:core_i3-10105t:-:*:*:*:*:*:*:*
intel core_i3-10110u — cpe:2.3:h:intel:core_i3-10110u:-:*:*:*:*:*:*:*
intel core_i3-10110y — cpe:2.3:h:intel:core_i3-10110y:-:*:*:*:*:*:*:*
intel core_i3-10300 — cpe:2.3:h:intel:core_i3-10300:-:*:*:*:*:*:*:*
intel core_i3-10300t — cpe:2.3:h:intel:core_i3-10300t:-:*:*:*:*:*:*:*
intel core_i3-10305 — cpe:2.3:h:intel:core_i3-10305:-:*:*:*:*:*:*:*
intel core_i3-10305t — cpe:2.3:h:intel:core_i3-10305t:-:*:*:*:*:*:*:*
intel core_i3-10320 — cpe:2.3:h:intel:core_i3-10320:-:*:*:*:*:*:*:*
intel core_i3-10325 — cpe:2.3:h:intel:core_i3-10325:-:*:*:*:*:*:*:*
intel core_i3-11100he — cpe:2.3:h:intel:core_i3-11100he:-:*:*:*:*:*:*:*
intel core_i3-1110g4 — cpe:2.3:h:intel:core_i3-1110g4:-:*:*:*:*:*:*:*
intel core_i3-1115g4 — cpe:2.3:h:intel:core_i3-1115g4:-:*:*:*:*:*:*:*
intel core_i3-1115g4e — cpe:2.3:h:intel:core_i3-1115g4e:-:*:*:*:*:*:*:*
intel core_i3-1115gre — cpe:2.3:h:intel:core_i3-1115gre:-:*:*:*:*:*:*:*
intel core_i3-1120g4 — cpe:2.3:h:intel:core_i3-1120g4:-:*:*:*:*:*:*:*
intel core_i3-1125g4 — cpe:2.3:h:intel:core_i3-1125g4:-:*:*:*:*:*:*:*
intel core_i3-6006u — cpe:2.3:h:intel:core_i3-6006u:-:*:*:*:*:*:*:*
intel core_i3-6098p — cpe:2.3:h:intel:core_i3-6098p:-:*:*:*:*:*:*:*
intel core_i3-6100 — cpe:2.3:h:intel:core_i3-6100:-:*:*:*:*:*:*:*
intel core_i3-6100e — cpe:2.3:h:intel:core_i3-6100e:-:*:*:*:*:*:*:*
intel core_i3-6100h — cpe:2.3:h:intel:core_i3-6100h:-:*:*:*:*:*:*:*
intel core_i3-6100t — cpe:2.3:h:intel:core_i3-6100t:-:*:*:*:*:*:*:*
intel core_i3-6100te — cpe:2.3:h:intel:core_i3-6100te:-:*:*:*:*:*:*:*
intel core_i3-6100u — cpe:2.3:h:intel:core_i3-6100u:-:*:*:*:*:*:*:*
intel core_i3-6102e — cpe:2.3:h:intel:core_i3-6102e:-:*:*:*:*:*:*:*
intel core_i3-6157u — cpe:2.3:h:intel:core_i3-6157u:-:*:*:*:*:*:*:*
intel core_i3-6167u — cpe:2.3:h:intel:core_i3-6167u:-:*:*:*:*:*:*:*
intel core_i3-6300 — cpe:2.3:h:intel:core_i3-6300:-:*:*:*:*:*:*:*
intel core_i3-6300t — cpe:2.3:h:intel:core_i3-6300t:-:*:*:*:*:*:*:*
intel core_i3-6320 — cpe:2.3:h:intel:core_i3-6320:-:*:*:*:*:*:*:*
intel core_i3-7020u — cpe:2.3:h:intel:core_i3-7020u:-:*:*:*:*:*:*:*
intel core_i3-7100 — cpe:2.3:h:intel:core_i3-7100:-:*:*:*:*:*:*:*
intel core_i3-7100e — cpe:2.3:h:intel:core_i3-7100e:-:*:*:*:*:*:*:*
intel core_i3-7100h — cpe:2.3:h:intel:core_i3-7100h:-:*:*:*:*:*:*:*
intel core_i3-7100t — cpe:2.3:h:intel:core_i3-7100t:-:*:*:*:*:*:*:*
intel core_i3-7100u — cpe:2.3:h:intel:core_i3-7100u:-:*:*:*:*:*:*:*
intel core_i3-7101e — cpe:2.3:h:intel:core_i3-7101e:-:*:*:*:*:*:*:*
intel core_i3-7101te — cpe:2.3:h:intel:core_i3-7101te:-:*:*:*:*:*:*:*
intel core_i3-7102e — cpe:2.3:h:intel:core_i3-7102e:-:*:*:*:*:*:*:*
intel core_i3-7130u — cpe:2.3:h:intel:core_i3-7130u:-:*:*:*:*:*:*:*
intel core_i3-7167u — cpe:2.3:h:intel:core_i3-7167u:-:*:*:*:*:*:*:*
intel core_i3-7300 — cpe:2.3:h:intel:core_i3-7300:-:*:*:*:*:*:*:*
intel core_i3-7300t — cpe:2.3:h:intel:core_i3-7300t:-:*:*:*:*:*:*:*
intel core_i3-7320 — cpe:2.3:h:intel:core_i3-7320:-:*:*:*:*:*:*:*
intel core_i3-7350k — cpe:2.3:h:intel:core_i3-7350k:-:*:*:*:*:*:*:*
intel core_i3-8100 — cpe:2.3:h:intel:core_i3-8100:-:*:*:*:*:*:*:*
intel core_i3-8100b — cpe:2.3:h:intel:core_i3-8100b:-:*:*:*:*:*:*:*
intel core_i3-8100h — cpe:2.3:h:intel:core_i3-8100h:-:*:*:*:*:*:*:*
intel core_i3-8100t — cpe:2.3:h:intel:core_i3-8100t:-:*:*:*:*:*:*:*
intel core_i3-8109u — cpe:2.3:h:intel:core_i3-8109u:-:*:*:*:*:*:*:*
intel core_i3-8130u — cpe:2.3:h:intel:core_i3-8130u:-:*:*:*:*:*:*:*
intel core_i3-8140u — cpe:2.3:h:intel:core_i3-8140u:-:*:*:*:*:*:*:*
intel core_i3-8145u — cpe:2.3:h:intel:core_i3-8145u:-:*:*:*:*:*:*:*
intel core_i3-8145ue — cpe:2.3:h:intel:core_i3-8145ue:-:*:*:*:*:*:*:*
intel core_i3-8300 — cpe:2.3:h:intel:core_i3-8300:-:*:*:*:*:*:*:*
intel core_i3-8300t — cpe:2.3:h:intel:core_i3-8300t:-:*:*:*:*:*:*:*
intel core_i3-8350k — cpe:2.3:h:intel:core_i3-8350k:-:*:*:*:*:*:*:*

References for CVE-2021-0127

cvelogic Threat Intelligence