CVE-2020-1108 [High] | Denial of Service in .net

CVE-2020-1108 is rated Moderate Risk (61/100): CVSS High severity, with medium exploitation likelihood (EPSS 3.79%). Review affected assets and schedule remediation.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2025-12-28	3.49%	3.79%	+0.30%
2	2025-12-27	3.79%	3.49%	-0.30%
3	2025-12-02	—	3.79%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2025-12-28

3.49%

3.79%

+0.30%

2025-12-27

3.79%

3.49%

-0.30%

2025-12-02

—

3.79%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
7.5	3.1	HIGH	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. 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: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.	3.9	3.6	[email protected]
5.0	2.0	MEDIUM	`AV:N/AC:L/Au:N/C:N/I:N/A:P` Click to expand Access vector (AV:N) Can be exploited remotely over network reachability. 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.	10.0	2.9	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

7.5

3.1

HIGH

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

Attack vector (AV:N): Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
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: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.

3.9

3.6

[email protected]

5.0

2.0

MEDIUM

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

Access vector (AV:N): Can be exploited remotely over network reachability.
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.

10.0

2.9

[email protected]

OS Trackers for CVE-2020-1108

vendor	priority	summary	link
`redhat`	high	—	https://access.redhat.com/security/cve/CVE-2020-1108

vendor

priority

summary

link

redhat

high

—

https://access.redhat.com/security/cve/CVE-2020-1108

Affected software / configurations for CVE-2020-1108

Vendor	Product	Version	Raw CPE
microsoft	.net	5.0	cpe:2.3:a:microsoft:.net:5.0:preview1::::::
microsoft	.net	5.0	cpe:2.3:a:microsoft:.net:5.0:preview2::::::
microsoft	.net	5.0	cpe:2.3:a:microsoft:.net:5.0:preview3::::::
microsoft	.net_core	>= 2.1, <= 2.1.18	cpe:2.3:a:microsoft:.net_core::::::::
microsoft	.net_core	>= 3.0, <= 3.1.4	cpe:2.3:a:microsoft:.net_core::::::::
microsoft	.net_framework	2.0	cpe:2.3:a:microsoft:.net_framework:2.0:sp2::::::
microsoft	.net_framework	3.0	cpe:2.3:a:microsoft:.net_framework:3.0:sp2::::::
microsoft	.net_framework	4.6	cpe:2.3:a:microsoft:.net_framework:4.6:::::::*
microsoft	.net_framework	3.5	cpe:2.3:a:microsoft:.net_framework:3.5:::::::*
microsoft	.net_framework	4.5.2	cpe:2.3:a:microsoft:.net_framework:4.5.2:::::::*
microsoft	.net_framework	4.6.1	cpe:2.3:a:microsoft:.net_framework:4.6.1:::::::*
microsoft	.net_framework	4.6.2	cpe:2.3:a:microsoft:.net_framework:4.6.2:::::::*
microsoft	.net_framework	4.7	cpe:2.3:a:microsoft:.net_framework:4.7:::::::*
microsoft	.net_framework	4.7.1	cpe:2.3:a:microsoft:.net_framework:4.7.1:::::::*
microsoft	.net_framework	4.7.2	cpe:2.3:a:microsoft:.net_framework:4.7.2:::::::*
microsoft	.net_framework	4.8	cpe:2.3:a:microsoft:.net_framework:4.8:::::::*
microsoft	.net_framework	3.5.1	cpe:2.3:a:microsoft:.net_framework:3.5.1:::::::*
microsoft	.net_core	2.1	cpe:2.3:a:microsoft:.net_core:2.1:::::::*
microsoft	.net_core	3.1	cpe:2.3:a:microsoft:.net_core:3.1:::::::*
microsoft	visual_studio_2017	15.9	cpe:2.3:a:microsoft:visual_studio_2017:15.9:::::::*
microsoft	visual_studio_2019	16.0	cpe:2.3:a:microsoft:visual_studio_2019:16.0:::::::*
microsoft	visual_studio_2019	16.4	cpe:2.3:a:microsoft:visual_studio_2019:16.4:::::::*
microsoft	visual_studio_2019	16.5	cpe:2.3:a:microsoft:visual_studio_2019:16.5:::::::*
microsoft	powershell	7.0	cpe:2.3:a:microsoft:powershell:7.0:::::::*
microsoft	powershell_core	6.2	cpe:2.3:a:microsoft:powershell_core:6.2:::::::*

References for CVE-2020-1108

URL	Tags
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1108	Patch Vendor Advisory

URL

CVE-2020-1108

Exploit prediction scoring system (EPSS) score for CVE-2020-1108

Common vulnerability scoring system (CVSS) metrics for CVE-2020-1108

Weakness enumeration for CVE-2020-1108

GitHub Security Advisory for CVE-2020-1108

OS Trackers for CVE-2020-1108

Affected software / configurations for CVE-2020-1108

References for CVE-2020-1108