How severe is CVE-2022-35521?

CVE-2022-35521 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-35521 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-35521?

CVE-2022-35521 primarily affects Wavlink Wn572hp3 Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-35521?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2022-35521 published?

CVE-2022-35521 was published on 2022-08-10 and last updated on 2026-06-17.

CVE-2022-35521

CVE-2022-35521 is a critical-severity vulnerability in Wavlink Wn572hp3 Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Wavlink Wn572hp3 Firmware
Published: 2022-08-10
Last modified: 2026-06-17

Description

WAVLINK WN572HP3, WN533A8, WN530H4, WN535G3, WN531P3 firewall.cgi has no filtering on parameters: remoteManagementEnabled, blockPortScanEnabled, pingFrmWANFilterEnabled and blockSynFloodEnabled, which leads to command injection in page /man_security.shtml.

Frequently asked questions

What is CVE-2022-35521?: WAVLINK WN572HP3, WN533A8, WN530H4, WN535G3, WN531P3 firewall.cgi has no filtering on parameters: remoteManagementEnabled, blockPortScanEnabled, pingFrmWANFilterEnabled and blockSynFloodEnabled, which leads to command injection in page /man_security.shtml.
How severe is CVE-2022-35521?: CVE-2022-35521 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-35521 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-35521?: CVE-2022-35521 primarily affects Wavlink Wn572hp3 Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-35521?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2022-35521 published?: CVE-2022-35521 was published on 2022-08-10 and last updated on 2026-06-17.

References

https://github.com/TyeYeah/othercveinfo/blob/main/wavlink/README.md#wavlink-router-ac1200-page-man_securityshtml-command-injection-in-firewallcgi

Affected products (5)

cpe:2.3:o:wavlink:wn572hp3_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:wavlink:wn533a8_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:wavlink:wn530h4_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:wavlink:wn535g3_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:wavlink:wn531p3_firmware:-:*:*:*:*:*:*:*

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CVE-2022-35538 — Critical (CVSS 9.8): WAVLINK WN572HP3, WN533A8, WN530H4, WN535G3, WN531P3 wireless.cgi has no filtering on parameters: delete_list,…
CVE-2022-35537 — Critical (CVSS 9.8): WAVLINK WN572HP3, WN533A8, WN530H4, WN535G3, WN531P3 wireless.cgi has no filtering on parameters: mac_5g and Newname,…
CVE-2022-35536 — Critical (CVSS 9.8): WAVLINK WN572HP3, WN533A8, WN530H4, WN535G3, WN531P3 qos.cgi has no filtering on parameters: qos_bandwith and qos_dat,…
CVE-2022-35535 — Critical (CVSS 9.8): WAVLINK WN572HP3, WN533A8, WN530H4, WN535G3, WN531P3 wireless.cgi has no filtering on parameter macAddr, which leads to…
CVE-2022-35534 — Critical (CVSS 9.8): WAVLINK WN572HP3, WN533A8, WN530H4, WN535G3, WN531P3 wireless.cgi has no filtering on parameter hiddenSSID32g and…
CVE-2022-35533 — Critical (CVSS 9.8): WAVLINK WN572HP3, WN533A8, WN530H4, WN535G3, WN531P3 qos.cgi has no filtering on parameters: cli_list and cli_num,…

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