What is CVE-2025-29042?

CVE-2025-29042 is a critical-severity vulnerability in Dlink Dir-823x, classified under OS Command Injection. CVSS score: 9.8/10. Published 2025-04-17.

How severe is CVE-2025-29042?

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

RCE in Dlink Dir-823x

CVE-2025-29042

An issue in dlink DIR 832x 240802 allows a remote attacker to execute arbitrary code via the macaddr key value to the function 0x42232c

Vulnerability class: Command Injection (OS Command Injection)

Published 2025-04-17 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.023 (82.7th percentile), scored 2026-09-28.

Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 82.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.021 · newest: 0.023 · change: +0.002

Affected products

Dlink Dir-823x
Dlink Dir-823x Firmware — versions 240802

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

www.dlink.com/en/security-bulletin/ (Vendor Advisory)
github.com/xyqer1/Dlink-dir-823x-set_prohibiting-macaddr-CommandInjection (Exploit, Third Party Advisory)
gist.github.com/xyqer1/841e78a3c4029808dac8c439595a1358 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2025-29042?: CVE-2025-29042 is a critical-severity vulnerability in Dlink Dir-823x, classified under OS Command Injection. CVSS score: 9.8/10. Published 2025-04-17.
How severe is CVE-2025-29042?: Critical severity. CVSS v3 base score is 9.8 out of 10.