CVE-2020-12352 [Medium] | Information Disclosure in Linux Kernel

CVE-2020-12352 is rated High Exploit Risk (73.2/100): CVSS Medium severity, with high exploitation likelihood (EPSS 5.71%, 92th percentile). 2 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

EDB-ID	Source	Kind	Published	Link
49754	exploit_db	edb	2021-04-08	Exploit-DB ↗
—	nvd_ref	exploit_tag		Exploit-DB ↗

EDB-ID

Source

Kind

Published

Link

49754

exploit_db

edb

2021-04-08

Exploit-DB ↗

—

nvd_ref

exploit_tag

Exploit-DB ↗

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-20	5.76%	5.71%	-0.05%
2	2026-06-15	2.39%	5.76%	+3.37%
3	2026-05-08	—	2.39%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-20

5.76%

5.71%

-0.05%

2026-06-15

2.39%

5.76%

+3.37%

2026-05-08

—

2.39%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
6.5	3.1	MEDIUM	`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N` Click to expand Attack vector (AV:A) Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet. 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:N) No account or special rights needed—anonymous or random user is enough. 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:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:N) Data isn’t meaningfully altered or forged. Availability (A:N) Service keeps running; no real outage angle.	2.8	3.6	[email protected]
3.3	2.0	LOW	`AV:A/AC:L/Au:N/C:P/I:N/A:N` Click to expand Access vector (AV:A) Requires access to an adjacent network segment. Access complexity (AC:L) Exploitation conditions are straightforward and predictable. Authentication (AU:N) No authentication is required. Confidentiality impact (C:P) Partial confidentiality impact. Integrity impact (I:N) No integrity impact. Availability impact (A:N) No availability impact.	6.5	2.9	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

6.5

3.1

MEDIUM

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Click to expand

Attack vector (AV:A): Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
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:N): No account or special rights needed—anonymous or random user is enough.
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:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:N): Data isn’t meaningfully altered or forged.
Availability (A:N): Service keeps running; no real outage angle.

2.8

3.6

[email protected]

3.3

2.0

LOW

AV:A/AC:L/Au:N/C:P/I:N/A:N Click to expand

Access vector (AV:A): Requires access to an adjacent network segment.
Access complexity (AC:L): Exploitation conditions are straightforward and predictable.
Authentication (AU:N): No authentication is required.
Confidentiality impact (C:P): Partial confidentiality impact.
Integrity impact (I:N): No integrity impact.
Availability impact (A:N): No availability impact.

6.5

2.9

[email protected]

OS Trackers for CVE-2020-12352

vendor	priority	summary	link
`debian`	not yet assigned	CVE-2020-12352 not yet assigned priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5.	https://security-tracker.debian.org/tracker/CVE-2020-12352
`redhat`	medium	—	https://access.redhat.com/security/cve/CVE-2020-12352
`suse`	medium	CVE-2020-12352 severity moderate: SUSE including 649 source package names (amazon/suse-sles-15-sp1-chost-byos-v20210304-hvm-ssd-x86_64, amazon/suse-sles-15-sp1-chost-byos-v20220127-hvm-ssd-x86_64, …), 1017 product×package rows across 124 product lines (HPE Helion OpenStack 8, Image SLES12-SP5-Azure-BYOS, … (124 product lines)): Fixed 842, Known Affected 157, Known Not Affected 18.	https://www.suse.com/security/cve/CVE-2020-12352/
`ubuntu`	medium	CVE-2020-12352 medium priority: Ubuntu including 115 source packages (linux, linux-aws, …), 1193 status rows across 12 suites (bionic, focal, groovy, hirsute, jammy, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 857, released 168, not-affected 158, ignored 10.	https://ubuntu.com/security/CVE-2020-12352

Affected software / configurations for CVE-2020-12352

Vendor	Product	Version	Raw CPE
linux	linux_kernel	>= 5.4, < 5.4.72	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.8.0, < 5.8.16	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.9.0, <= 5.9.13	cpe:2.3:o:linux:linux_kernel::::::::

References for CVE-2020-12352

URL	Tags
http://packetstormsecurity.com/files/161229/Kernel-Live-Patch-Security-Notice-LSN-0074-1.html	Exploit Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/162131/Linux-Kernel-5.4-BleedingTooth-Remote-Code-Execution.html	Third Party Advisory VDB Entry
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00435.html?wapkw=CVE-2020-12351	Third Party Advisory

URL

CVE-2020-12352

Public exploit references (Exploit-DB) for CVE-2020-12352

Exploit prediction scoring system (EPSS) score for CVE-2020-12352

Common vulnerability scoring system (CVSS) metrics for CVE-2020-12352

Weakness enumeration for CVE-2020-12352

OS Trackers for CVE-2020-12352

Affected software / configurations for CVE-2020-12352

References for CVE-2020-12352