What is CVE-2020-12125?

CVE-2020-12125 is a critical-severity vulnerability in Wavlink Wn530h4, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2020-10-02.

How severe is CVE-2020-12125?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2020-12125 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Wavlink Wn530h4

CVE-2020-12125

A remote buffer overflow vulnerability in the /cgi-bin/makeRequest.cgi endpoint of the WAVLINK WN530H4 M30H4.V5030.190403 allows an attacker to execute arbitrary machine instructions as root without authentication.

Vulnerability class: Buffer Overflow

EPSS: 0.036 (88.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Wavlink Wn530h4
Wavlink Wn530h4_firmware — versions m30h4.v5030.190403
N/a — versions n/a

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

Public proof-of-concept exploits

References

cve@mitre.org (Product, x_refsource_MISC, Vendor Advisory)
cve@mitre.org (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2020-12125?: CVE-2020-12125 is a critical-severity vulnerability in Wavlink Wn530h4, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2020-10-02.
How severe is CVE-2020-12125?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2020-12125 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.