What is CVE-2025-1103?

CVE-2025-1103 is a medium-severity vulnerability in D-Link Dir-823x, classified under Improper Resource Shutdown or Release. CVSS score: 6.5/10. Published 2025-02-07.

How severe is CVE-2025-1103?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Is CVE-2025-1103 known to be exploited?

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

NULL pointer dereference in D-Link Dir-823x

CVE-2025-1103

A vulnerability, which was classified as problematic, was found in D-Link DIR-823X 240126/240802. This affects the function set_wifi_blacklists of the file /goform/set_wifi_blacklists of the component HTTP POST Request Handler. The manipulation of the argument macList leads to null pointer dereference. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.

Published 2025-02-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.141 (96.4th percentile), scored 2026-09-29.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 96.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.130 · newest: 0.141 · change: +0.010

Affected products

D-Link Dir-823x — versions 240126, 240802
Dlink Dir-823x
Dlink Dir-823x Firmware — versions 240126, 240802

Weakness classification (CWE)

Public proof-of-concept exploits

JohenanLi/router_

References

vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry, Third Party Advisory)
vuldb.com/ (Third Party Advisory, third-party-advisory)
tasty-foxtrot-3a8.notion.site/D-link-DIR-823X-set_wifi_blacklists-Vulnerability… (Exploit, Third Party Advisory, exploit)
www.dlink.com/ (Product, product)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2025-1103?: CVE-2025-1103 is a medium-severity vulnerability in D-Link Dir-823x, classified under Improper Resource Shutdown or Release. CVSS score: 6.5/10. Published 2025-02-07.
How severe is CVE-2025-1103?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2025-1103 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.