CVE-2020-27786

highpriority · track · 42EPSS 0.017 · 77 %ileexploit · PoCEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

4 exploits · PoC

Likely / severe?

1.67% (77th) EPSS

CVSS 7.2 · high

Is it mine?

92 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · osv

EPSS · scored 2026-10-27

A flaw was found in the Linux kernel’s implementation of MIDI, where an attacker with a local account and the permissions to issue ioctl commands to midi devices could trigger a use-after-free issue. A write to this specific memory while freed and before use causes the flow of execution to change and possibly allow for memory corruption or privilege escalation. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

cvss

Technical severity, 0–10. One row per scoring source.

7.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.07.2highAV:L/AC:L/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 3.9 · impact 10

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 5.9

v3.17.8highAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.17.4highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Psecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-416USCWE-416US

exploits (4)

Public proof-of-concept and weaponised exploit code.

Trinadh465/linux-4.19.72_CVE-2020-27786Trinadh465/linux-4.19.72_CVE-2020-27786PoC · poc_in_github
elbiazo/CVE-2020-27786elbiazo/CVE-2020-27786PoC · poc_in_github
ii4gsp/CVE-2020-27786ii4gsp/CVE-2020-27786PoC · poc_in_github
kiks7/CVE-2020-27786-Kernel-Exploit4.9 Kernel Exploit for CVE-2020-27786PoC · poc_in_github

affected products (92)

Products and version ranges known to be affected.

n/a Kernel≤ kernel 5.7-rc6enisa_euvdEU
Novell Inc. HPE Helion Openstack≤ 8fstec_bduRU
Novell Inc. OpenSUSE Leap≤ 15.1fstec_bduRU
Novell Inc. OpenSUSE Leap≤ 15.2fstec_bduRU
Novell Inc. SUSE Enterprise Storage≤ 5fstec_bduRU
Novell Inc. SUSE Linux Enterprise High Availability≤ 12 SP4fstec_bduRU
Novell Inc. SUSE Linux Enterprise High Availability≤ 15 SP2fstec_bduRU
Novell Inc. SUSE Linux Enterprise High Availability≤ 15 SP1fstec_bduRU
Novell Inc. SUSE Linux Enterprise High Availability≤ 12 SP3fstec_bduRU
Novell Inc. SUSE Linux Enterprise High Availability≤ 12 SP5fstec_bduRU
Novell Inc. SUSE Linux Enterprise High Availability≤ 15fstec_bduRU
Novell Inc. SUSE Linux Enterprise High Availability≤ 12 SP2fstec_bduRU
Novell Inc. SUSE Linux Enterprise High Performance Computing≤ 15-LTSSfstec_bduRU
Novell Inc. SUSE Linux Enterprise High Performance Computing≤ 15-ESPOSfstec_bduRU
Novell Inc. SUSE Linux Enterprise Live Patching≤ 12 SP5fstec_bduRU
Novell Inc. SUSE Linux Enterprise Live Patching≤ 12 SP4fstec_bduRU
Novell Inc. SUSE Linux Enterprise Module for Basesystem≤ 15 SP1fstec_bduRU
Novell Inc. SUSE Linux Enterprise Module for Basesystem≤ 15 SP2fstec_bduRU
Novell Inc. SUSE Linux Enterprise Module for Development Tools≤ 15 SP2fstec_bduRU
Novell Inc. SUSE Linux Enterprise Module for Development Tools≤ 15 SP1fstec_bduRU

showing 20 of 92

advisories (1)

Vendor and ecosystem advisories describing this.

PUB-A-1757690132021-05-01vendor · osvUS
In several functions of rawmidi.c, there is a possible use after free due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu osv NVD CVE.org MITRE

published 2020-12-11modified 2026-06-17

references (27)

External citations — patches, advisories, analysis.

scry

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