CVE-2021-33356

Exp

Multiple privilege escalation vulnerabilities in RaspAP 1.5 to 2.6.5 could allow an authenticated remote attacker to inject arbitrary commands to /installers/common.sh component that can result in remote command execution with root privileges.

Published: 2021-06-09 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-33356 is rated High Exploit Risk (80.6/100): CVSS High severity, with high exploitation likelihood (EPSS 11.12%, 93th percentile). 5 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

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

Public exploit references (Exploit-DB) for CVE-2021-33356

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2021-33356

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 2025-11-21 13.29% 11.12% -2.16%
2 2025-11-18 11.12% 13.29% +2.16%
3 2025-06-20 — 11.12% —

Full EPSS history (19 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-33356

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/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: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: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.
 2.8 5.9 [email protected]
9.0 2.0 HIGH
AV:N/AC:L/Au:S/C:C/I:C/A:C 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:S)
A single authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.0 10.0 [email protected]

Weakness enumeration for CVE-2021-33356

Affected software / configurations for CVE-2021-33356

Vendor Product Version Raw CPE
raspap raspap >= 1.5, <= 2.6.5 cpe:2.3:a:raspap:raspap:*:*:*:*:*:*:*:*

References for CVE-2021-33356

URL Tags
https://gist.github.com/omriinbar/52c000c02a6992c6ce68d531195f69cf Third Party Advisory
https://github.com/RaspAP/raspap-webgui/blob/5a7b77459839c9420fac0d10ec28cee1af9bb782/installers/common.sh#L216 Exploit Third Party Advisory
https://github.com/RaspAP/raspap-webgui/blob/5a7b77459839c9420fac0d10ec28cee1af9bb782/installers/common.sh#L231 Exploit Third Party Advisory
https://github.com/RaspAP/raspap-webgui/blob/5a7b77459839c9420fac0d10ec28cee1af9bb782/installers/common.sh#L314 Exploit Third Party Advisory
https://github.com/RaspAP/raspap-webgui/blob/5a7b77459839c9420fac0d10ec28cee1af9bb782/installers/common.sh#L407 Exploit Third Party Advisory
https://github.com/RaspAP/raspap-webgui/blob/5a7b77459839c9420fac0d10ec28cee1af9bb782/installers/common.sh#L510 Exploit Third Party Advisory
cvelogic Threat Intelligence