TI-2019-09950 Aliases CVE-2019-13266 GHSA-49mw-9246-92jq

TP-Link Archer C3200 V1 and Archer C2 V1 devices have Insufficient Compartmentalization…

MEDIUM 40CWE-669Published 2019-08-27 · Updated 2024-08-04

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 3.0 · NVD. Fix status from CNA.

Summary

TP-Link Archer C3200 V1 and Archer C2 V1 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

EPSS 0.00973 62nd percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

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 · 4

CPE	Versions	Role	Vendor
cpe:2.3:o:tp-link:archer_c3200_v1_firmware:-:::::::*	not specified by NVD	Vulnerable	TP-Link
cpe:2.3:h:tp-link:archer_c3200_v1:-:::::::*	not specified by NVD	Running on	TP-Link
cpe:2.3:o:tp-link:archer_c2_v1_firmware:-:::::::*	not specified by NVD	Vulnerable	TP-Link
cpe:2.3:h:tp-link:archer_c2_v1:-:::::::*	not specified by NVD	Running on	TP-Link

cpe:2.3:o:tp-link:archer_c3200_v1_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·TP-Link
cpe:2.3:h:tp-link:archer_c3200_v1:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·TP-Link
cpe:2.3:o:tp-link:archer_c2_v1_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·TP-Link
cpe:2.3:h:tp-link:archer_c2_v1:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·TP-Link

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2019-13266
2026-10-03 Alias added: GHSA-49mw-9246-92jq

References

Exploit 1

https://orenlab.sise.bgu.ac.il/publications/CrossRouter

Advisory 1

https://www.usenix.org/system/files/woot19-paper_ovadia.pdf

TI-2023-14256 TP-LINK Archer C50v2 Archer C50(US)_V2_160801, TP-LINK Archer C20v1 Archer_C20_V1_150707… CVSS 3.1HIGH 7.5
TI-2019-09952 TP-Link Archer C3200 V1 and Archer C2 V1 devices have Insufficient Compartmentalization… CVSS 3.0HIGH 8.8
TI-2019-09951 TP-Link Archer C3200 V1 and Archer C2 V1 devices have Insufficient Compartmentalization… CVSS 3.0HIGH 8.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences