CVE-2020-15227 [High] | RCE in Application

CVE-2020-15227 is rated Moderate Risk (64.2/100): CVSS High severity, with high exploitation likelihood (EPSS 35.23%, 98th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	93.79%	35.23%	-58.56%
2	2026-03-04	93.61%	93.79%	+0.18%
3	2026-03-01	—	93.61%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

93.79%

35.23%

-58.56%

2026-03-04

93.61%

93.79%

+0.18%

2026-03-01

—

93.61%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
8.7	3.1	HIGH	`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N` 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:H) Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work. 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:C) Breaking this can reach past the original component and bite other resources—bigger blast radius. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:N) Service keeps running; no real outage angle.	2.2	5.8	[email protected]
9.8	3.1	CRITICAL	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	3.9	5.9	[email protected]
7.5	2.0	HIGH	`AV:N/AC:L/Au:N/C:P/I:P/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:P) Partial confidentiality impact. Integrity impact (I:P) Partial integrity impact. Availability impact (A:P) Partial availability impact.	10.0	6.4	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

8.7

3.1

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N 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:H): Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
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:C): Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N): Service keeps running; no real outage angle.

2.2

5.8

[email protected]

9.8

3.1

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

3.9

5.9

[email protected]

7.5

2.0

HIGH

AV:N/AC:L/Au:N/C:P/I:P/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:P): Partial confidentiality impact.
Integrity impact (I:P): Partial integrity impact.
Availability impact (A:P): Partial availability impact.

10.0

6.4

[email protected]

OS Trackers for CVE-2020-15227

vendor	priority	summary	link
`ubuntu`	medium	CVE-2020-15227 medium priority: Ubuntu including 1 source packages (php-nette), 15 status rows across 15 suites (bionic, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, trusty, upstream, xenial): DNE 12, released 3.	https://ubuntu.com/security/CVE-2020-15227

Affected software / configurations for CVE-2020-15227

Vendor	Product	Version	Raw CPE
nette	application	>= 2.0.0, < 2.0.19	cpe:2.3:a:nette:application::::::::
nette	application	>= 2.1.0, < 2.1.13	cpe:2.3:a:nette:application::::::::
nette	application	>= 2.2.0, < 2.2.10	cpe:2.3:a:nette:application::::::::
nette	application	>= 2.3.0, < 2.3.14	cpe:2.3:a:nette:application::::::::
nette	application	>= 2.4.0, < 2.4.16	cpe:2.3:a:nette:application::::::::
nette	application	>= 3.0.0, < 3.0.6	cpe:2.3:a:nette:application::::::::
debian	debian_linux	9.0	cpe:2.3:o:debian:debian_linux:9.0:::::::*

References for CVE-2020-15227

URL	Tags
https://github.com/nette/application/security/advisories/GHSA-8gv3-3j7f-wg94	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/04/msg00003.html	Mailing List Third Party Advisory
https://packagist.org/packages/nette/application	Third Party Advisory
https://packagist.org/packages/nette/nette	Third Party Advisory

URL

CVE-2020-15227 | Remote Code Execution vulnerability

Exploit prediction scoring system (EPSS) score for CVE-2020-15227

Common vulnerability scoring system (CVSS) metrics for CVE-2020-15227

Weakness enumeration for CVE-2020-15227

GitHub Security Advisory for CVE-2020-15227

OS Trackers for CVE-2020-15227

Affected software / configurations for CVE-2020-15227

References for CVE-2020-15227