What is CVE-2025-29520?

CVE-2025-29520 is a medium-severity vulnerability in Dlink Dsl-7740c, classified under Improper Access Control. CVSS score: 5.3/10. Published 2025-08-25.

How severe is CVE-2025-29520?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Dlink Dsl-7740c

CVE-2025-29520

Incorrect access control in the Maintenance module of D-Link DSL-7740C with firmware DSL7740C.V6.TR069.20211230 allows authenticated attackers with low-level privileges to arbitrarily change the high-privileged account passwords and escalate privileges.

Published 2025-08-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.006 (45.6th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 45.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Dlink Dsl-7740c
Dlink Dsl-7740c Firmware — versions 6.tr069.20211230

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

www.dlink.com/en/security-bulletin/ (Vendor Advisory)
gist.github.com/stevenyu113228/da01c377030fd8c92274feca54661202 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2025-29520?: CVE-2025-29520 is a medium-severity vulnerability in Dlink Dsl-7740c, classified under Improper Access Control. CVSS score: 5.3/10. Published 2025-08-25.
How severe is CVE-2025-29520?: Medium severity. CVSS v3 base score is 5.3 out of 10.