Is CVE-2021-44159 in the CISA KEV catalog?

No. CVE-2021-44159 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-44159?

CVE-2021-44159 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2021-44159?

CVE-2021-44159 has an EPSS score of 3.41% (87th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-44159?

Upgrade gcb doctor to 2021-09-16 or later.

CVE & CISA-KEV Catalog

CVE-2021-44159

CRITICALEPSS 87th pctl

9.8

CVSS v3

NVD

Description

4MOSAn GCB Doctor’s file upload function has improper user privilege control. A remote attacker can upload arbitrary files including webshell files without authentication and execute arbitrary code in order to perform arbitrary system operations or deny of service attack.

CWE-434Unrestricted File Upload

How to fix

Remediation Available

gcb doctorNVD

Affected:< 2021-09-16Fixed in:2021-09-16CVE-2021-44159derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

3.41%probability of exploitation in 30 days

87thpercentile

Elevated risk: more likely to be exploited than 87% of all known CVEs.

References

Third-Party Advisory1

twcert.org.tw

Related Vulnerabilities

Other CWE-434 (Unrestricted File Upload) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2017-12617	High	8.1	100%	KEV	Fix
CVE-2018-15961	Critical	9.8	100%	KEV	-
CVE-2021-31207	Medium	6.6	100%	KEV + Ransom	Fix
CVE-2017-12615	High	8.1	100%	KEV + Ransom	-
CVE-2025-31324	Critical	10.0	99%	KEV + Ransom	-
CVE-2024-50623	Critical	9.8	99%	KEV + Ransom	Fix

Embed a live status badge for CVE-2021-44159

Markdown

[![CVE-2021-44159](https://tridentstack.com/cve/badge/CVE-2021-44159.svg)](https://tridentstack.com/cve/CVE-2021-44159)

HTML

<a href="https://tridentstack.com/cve/CVE-2021-44159"><img src="https://tridentstack.com/cve/badge/CVE-2021-44159.svg" alt="CVE-2021-44159"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.