CVE-2017-6548

CRITICAL

ASUS RT-AC53 and other ASUS routers - Remote Code Execution via Networkmap Buffer Overflow

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2017-6548. PoCs published by Bruno Bierbaumer.

AI-analyzed exploit summary This exploit demonstrates a stack-based buffer overflow in the `networkmap` component of ASUSWRT routers (CVE-2017-6548). The vulnerability arises from improper parsing of the `Location` header in SSDP responses, allowing an attacker to overflow the `host` buffer and control the program counter ($pc).

Description

Buffer overflows in networkmap on ASUS RT-N56U, RT-N66U, RT-AC66U, RT-N66R, RT-AC66R, RT-AC68U, RT-AC68R, RT-N66W, RT-AC66W, RT-AC87R, RT-AC87U, RT-AC51U, RT-AC68P, RT-N11P, RT-N12+, RT-N12E B1, RT-AC3200, RT-AC53U, RT-AC1750, RT-AC1900P, RT-N300, and RT-AC750 routers with firmware before 3.0.0.4.380.7378; RT-AC68W routers with firmware before 3.0.0.4.380.7266; and RT-N600, RT-N12+ B1, RT-N11P B1, RT-N12VP B1, RT-N12E C1, RT-N300 B1, and RT-N12+ Pro routers with firmware before 3.0.0.4.380.9488; and Asuswrt-Merlin firmware before 380.65_2 allow remote attackers to execute arbitrary code on the router via a long host or port in crafted multicast messages.

Exploits (1)

exploitdb WORKING POC
by Bruno Bierbaumer · textwebappshardware
https://www.exploit-db.com/exploits/41573

This exploit demonstrates a stack-based buffer overflow in the `networkmap` component of ASUSWRT routers (CVE-2017-6548). The vulnerability arises from improper parsing of the `Location` header in SSDP responses, allowing an attacker to overflow the `host` buffer and control the program counter ($pc).

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: ASUSWRT (networkmap component)
No auth needed
Prerequisites: Network access to the vulnerable router · Ability to send crafted SSDP responses
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (4)

Core 4
Core References
Various Sources x_refsource_confirm
https://asuswrt.lostrealm.ca/changelog
Exploit, Third Party Advisory exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/41573/
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/96938
Exploit, Third Party Advisory x_refsource_misc
https://bierbaumer.net/security/asuswrt/#remote-code-execution

Scores

CVSS v3 9.8
EPSS 0.2134
EPSS Percentile 97.3%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-119
Status published
Products (1)
asus/rt-ac53_firmware 3.0.0.4.380.6038
Published Mar 09, 2017
Tracked Since Feb 18, 2026