No exploitation reported

CVE-2017-11420

No exploitation reported by the sources we read.

Published2017-07-18
WeaknessCWE-119

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Stack-based buffer overflow in ASUS_Discovery.c in networkmap in Asuswrt-Merlin firmware for ASUS devices and ASUS firmware for ASUS RT-AC5300, RT_AC1900P, RT-AC68U, RT-AC68P, RT-AC88U, RT-AC66U, RT-AC66U_B1, RT-AC58U, RT-AC56U, RT-AC55U, RT-AC52U, RT-AC51U, RT-N18U, RT-N66U, RT-N56U, RT-AC3200, RT-AC3100, RT_AC1200GU, RT_AC1200G, RT-AC1200, RT-AC53, RT-N12HP, RT-N12HP_B1, RT-N12D1, RT-N12+, RT_N12+_PRO, RT-N16, and RT-N300 devices allows remote attackers to execute arbitrary code via long device information that is mishandled during a strcat to a device list.

Timeline

dates in UTC

2017-07-1805:29CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2017-11420?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2017-11420?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Asuswrt-merlin project rt ac1200g firmwareversion to verify

Branch	Affected	Fixed in	Source
3.0	≤ 3.0.0.4.380.3167	no fix published	NVD

Asuswrt-merlin project rt ac1200gu firmwareversion to verify

Branch	Affected	Fixed in	Source
3.0	≤ 3.0.0.4.380.5577	no fix published	NVD

Asuswrt-merlin project rt ac1900p firmwareversion to verify

Branch	Affected	Fixed in	Source
3.0	≤ 3.0.0.4.380.7743	no fix published	NVD

25 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.09.8read 2026-10-23
NVDCVSS 2.010read 2026-10-23
NVDweakness (CWE)CWE-119read 2026-10-23
FIRST EPSSEPSS score5.6 %2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2017-07-18
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2017-11420?

Is CVE-2017-11420 actively exploited?

Active exploitation of CVE-2017-11420 has not been confirmed. Its EPSS score was 5.6% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2017-11420?

CVE-2017-11420 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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