D-link DIR-825AC G1 devices have Insufficient Compartmentalization between a host network…
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
D-link DIR-825AC G1 devices have Insufficient Compartmentalization between a host network and a guest network that are established by the same device. A DHCP Request is sent to the router with a certain Transaction ID field. Following the DHCP protocol, the router responds with an ACK or NAK message. Studying the NAK case revealed that the router erroneously sends the NAK to both Host and Guest networks with the same Transaction ID as found in the DHCP Request. This allows encoding of data to be sent cross-router into the 32-bit Transaction ID field.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:dlink:dir-825\/ac_g1_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | D-Link Japan K.K. |
| cpe:2.3:h:dlink:dir-825\/ac_g1:-:*:*:*:*:*:*:* | not specified by NVD | Running on | D-Link Japan K.K. |
- cpe:2.3:o:dlink:dir-825\/ac_g1_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·D-Link Japan K.K.
- cpe:2.3:h:dlink:dir-825\/ac_g1:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2019-13263
- 2026-10-03 Alias added: GHSA-jrgh-f66h-m27j
References
More D-Link Japan K.K. Dir-825/ac G1 Firmware vulnerabilities
- TI-2019-09949 D-link DIR-825AC G1 devices have Insufficient Compartmentalization between a host network… CVSS 3.1HIGH 8.8
- TI-2019-09948 D-link DIR-825AC G1 devices have Insufficient Compartmentalization between a host network… CVSS 3.1HIGH 8.8
Sources
- CVE-2019-13263 · CVE Program
- CVE-2019-13263 · NVD
- FIRST EPSS
- GHSA-jrgh-f66h-m27j · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences