How severe is CVE-2021-41437?

CVE-2021-41437 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-41437 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-41437?

CVE-2021-41437 affects Asus Rt-ax88u Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-41437?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-41437 published?

CVE-2021-41437 was published on 2022-09-26 and last updated on 2026-06-17.

CVE-2021-41437

CVE-2021-41437 is a medium-severity vulnerability in Asus Rt-ax88u Firmware with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-74.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-74
Affected product: Asus Rt-ax88u Firmware
Published: 2022-09-26
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2021-41437?: 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.
How severe is CVE-2021-41437?: CVE-2021-41437 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-41437 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-41437?: CVE-2021-41437 affects Asus Rt-ax88u Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-41437?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-41437 published?: CVE-2021-41437 was published on 2022-09-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:asus:rt-ax88u_firmware:*:*:*:*:*:*:*:*

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