Is CVE-2021-41437 in the CISA KEV catalog?

No. CVE-2021-41437 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-41437?

CVE-2021-41437 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2021-41437?

CVE-2021-41437 has an EPSS score of 0.84% (53th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-41437?

Upgrade rt-ax88u firmware to 3.0.0.4.388.20558 or later.

CVE & CISA-KEV Catalog

CVE-2021-41437

MEDIUM

6.5

CVSS v3

NVD

Description

An HTTP response splitting attack in web application in ASUS RT-AX88U before v3.0.0.4.388.20558 allows an attacker to craft a specific URL that if an authenticated victim visits it, the URL will give access to the cloud storage of the attacker.

CWE-74Injection

How to fix

Remediation Available

rt-ax88u firmwareNVD

Affected:< 3.0.0.4.388.20558Fixed in:3.0.0.4.388.20558CVE-2021-41437derived 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 InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

0.84%probability of exploitation in 30 days

53rdpercentile

Moderate risk: more likely to be exploited than 53% of all known CVEs.

References

Patch2

Related Vulnerabilities

Other CWE-74 (Injection) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2013-2251	Critical	9.8	100%	KEV	Fix
CVE-2023-22527	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2019-2725	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2022-46169	Critical	9.8	100%	KEV	Fix
CVE-2022-35914	Critical	9.8	100%	KEV	-
CVE-2019-17558	High	7.5	99%	KEV	Fix

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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 2025-05-21.