# CVE-2018-10561 — Dasannetworks Gpon Router Firmware

**CISA KEV**

> As of 2025-10-21, CVE-2018-10561 is a CRITICAL-severity vulnerability in Dasannetworks Gpon Router Firmware, CVSS v3.1 9.8, EPSS 93.3% (99.8th percentile). It is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-31), with a US federal remediation deadline of 2022-04-21. Threadlinqs Intelligence links 3 tracked threat campaigns to CVE-2018-10561, most recently “TuxBot v3 Evolution: Keksec-Linked IoT/Linux Botnet with Verbatim LLM Chain-of-Thought Code Artifacts”.

**Last updated:** 2025-10-21

## What is CVE-2018-10561?

An issue was discovered on Dasan GPON home routers. It is possible to bypass authentication simply by appending "?images" to any URL of the device that requires authentication, as demonstrated by the /menu.html?images/ or /GponForm/diag_FORM?images/ URI. One can then manage the device.

The record classifies CVE-2018-10561 under weakness class [CWE-287](https://cwe.mitre.org/data/definitions/287.html). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction, and has high impact on confidentiality, integrity, availability. 2 affected-product entries are recorded, across 1 vendor, listed below. The identifier was first published 3054 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 9.8 — CRITICAL (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **EPSS (FIRST):** 93.3% probability of exploitation in the next 30 days, higher than 99.8% of all scored CVEs
- **CISA KEV:** Listed since 2022-03-31, federal remediation deadline 2022-04-21
- **Threadlinqs priority:** 9/10 — CISA KEV-listed, which Threadlinqs floors at 9
- **Published:** 2018-05-04, last modified 2025-10-21

## Is CVE-2018-10561 being exploited?

CISA added CVE-2018-10561 to the Known Exploited Vulnerabilities catalog on 2022-03-31, which means the agency holds evidence of exploitation in the wild; US federal civilian agencies had to remediate it by 2022-04-21 under BOD 22-01. Weaponised exploit code for CVE-2018-10561 is publicly available. 1 public proof-of-concept repository is tracked for this identifier. It currently carries a trending score of 43 in the Threadlinqs vulnerability feed.

- [trickest/cve](https://github.com/trickest/cve/blob/main/2018/CVE-2018-10561.md) (trickest)

## Affected products and versions

- **Dasannetworks**: Gpon Router Firmware, Gpon Router

## How to fix CVE-2018-10561

Because CVE-2018-10561 is KEV-listed, US federal civilian agencies were required to apply the vendor fix, or stop using the product, by 2022-04-21. No vendor patch reference has been recorded for CVE-2018-10561 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2018-10561

3 tracked threats in the Threadlinqs corpus reference CVE-2018-10561, either in the campaign’s CVE list or as an indicator on the campaign record.

- [TuxBot v3 Evolution: Keksec-Linked IoT/Linux Botnet with Verbatim LLM Chain-of-Thought Code Artifacts](https://intel.threadlinqs.com/threat/TL-2026-1397) — MEDIUM · 2026-07-16
- [TuxBot v3 Evolution: LLM-Assisted IoT Botnet Framework With a Broken Multi-CVE Exploit Chain](https://intel.threadlinqs.com/threat/TL-2026-1366) — HIGH · 2026-07-15
- [P2P Botnets in the Wild: Pink, Hajime, Mozi, FritzFrog, and Panchan — Decentralized C2 Landscape (360 Netlab Continuous Monitoring)](https://intel.threadlinqs.com/threat/TL-2026-0752) — HIGH · 2026-06-10

## Sources

Enriched from CVE.org, NVD, FIRST EPSS, CISA KEV, GitHub Security Advisories, public proof-of-concept repositories. Last verified by Threadlinqs on 2026-06-22. This product uses the NVD API but is not endorsed or certified by the NVD.

**Exploit and proof of concept**

- [exploit-db.com — exploit](https://www.exploit-db.com/exploits/44576/)

**Vulnerability database entry**

- [securityfocus.com — vdb entry](http://www.securityfocus.com/bid/107053)

**Other references**

- [vpnmentor.com](https://www.vpnmentor.com/blog/critical-vulnerability-gpon-router/)

Canonical: https://intel.threadlinqs.com/cve/CVE-2018-10561
Full detection coverage and IOCs for threats exploiting CVE-2018-10561 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp