How severe is CVE-2025-55847?

CVE-2025-55847 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-55847 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-55847?

CVE-2025-55847 affects Wavlink Wl-wn586x3a Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-55847?

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

Does CVE-2025-55847 have an EU (EUVD) identifier?

Yes. CVE-2025-55847 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-31379.

When was CVE-2025-55847 published?

CVE-2025-55847 was published on 2025-09-26 and last updated on 2026-06-17.

CVE-2025-55847

CVE-2025-55847 is a high-severity vulnerability in Wavlink Wl-wn586x3a Firmware with a CVSS 3.x base score of 8.8. 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-120.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-31379
Weakness: CWE-120
Affected product: Wavlink Wl-wn586x3a Firmware
Published: 2025-09-26
Last modified: 2026-06-17

Description

Wavlink M86X3A_V240730 contains a buffer overflow vulnerability in the /cgi-bin/ExportAllSettings.cgi file. The vulnerability arises because the Cookie parameter does not properly validate the length of input data. Attackers can exploit this to execute arbitrary code or cause a denial of service (DoS) on the system

Frequently asked questions

What is CVE-2025-55847?: Wavlink M86X3A_V240730 contains a buffer overflow vulnerability in the /cgi-bin/ExportAllSettings.cgi file. The vulnerability arises because the Cookie parameter does not properly validate the length of input data. Attackers can exploit this to execute arbitrary code or cause a denial of service (DoS) on the system
How severe is CVE-2025-55847?: CVE-2025-55847 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-55847 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-55847?: CVE-2025-55847 affects Wavlink Wl-wn586x3a Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-55847?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-55847 have an EU (EUVD) identifier?: Yes. CVE-2025-55847 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-31379.
When was CVE-2025-55847 published?: CVE-2025-55847 was published on 2025-09-26 and last updated on 2026-06-17.

References

https://github.com/meigui637/iot_zone/blob/main/%E6%A0%88%E6%BA%A2%E5%87%BA%E6%BC%8F%E6%B4%9E.md

Affected products (1)

cpe:2.3:o:wavlink:wl-wn586x3a_firmware:m86x3a_v240730:*:*:*:*:*:*:*

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