CVE-2026-109683 PUBLISHED

UPnP Newline Injection Vulnerability in TP-Link Archer BE805

Assigner: TPLink
Reserved: 12.10.2026 Published: 06.11.2026 Updated: 06.11.2026

A newline injection vulnerability exists in the UPnP service of Archer BE805 v1 such that an adjacent attacker can supply newline characters in a UPnP port-mapping description due to improper sanitization, resulting in possible injection of unintended content into UPnP port-mapping data.

Successful exploitation may allow an unauthenticated attacker on the local network to modify runtime UPnP port-mapping information and create spoofed entries within the affected service. The issue is limited to the integrity of UPnP mapping data and does not demonstrate code execution or privilege escalation.

Metrics

CVSS Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
CVSS Score: 5.3

Product Status

Vendor TP-Link Systems Inc.
Product Archer BE805 v1
Versions Default: unaffected
  • affected from 0 to V1.6_1.5.1 Build 261102 (excl.)
  • affected from 0 to V1.20_1.5.1 Build 261102 (excl.)

Credits

  • WATARU KOKUBO finder

References

Problem Types

  • CWE-93 Improper neutralization of CRLF sequences ('CRLF injection') CWE

Impacts

  • CAPEC-23 File Content Injection