How severe is CVE-2018-10561?

CVE-2018-10561 has a CVSS score of 9.8/10, rated CRITICAL. Immediate patching is strongly recommended.

Which packages are affected by CVE-2018-10561?

Affected package information for CVE-2018-10561 is not yet fully mapped. Check the official advisory links for details.

How do I fix CVE-2018-10561?

No fixed version has been published for CVE-2018-10561 yet. Monitor the advisory for updates, apply mitigations recommended by the vendor, and use O3 Security to track when a fix becomes available in your stack.

Is CVE-2018-10561 actively exploited in the wild?

Yes. There are 8 known exploit references for CVE-2018-10561, including 1 documented proof-of-concept exploit on Exploit-DB and 6 in-the-wild exploitations observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2018-10561?

CVE-2018-10561 has an EPSS (Exploit Prediction Scoring System) score of 93.3%, placing it in the 100th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. A score above 50% indicates significantly elevated exploitation risk — immediate patching is strongly recommended.

Is CVE-2018-10561 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2018-10561 (Dasan GPON Routers Authentication Bypass Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2022-03-31. CISA required all US federal civilian agencies to remediate this vulnerability by 2022-04-21. The required action was: The impacted product is end-of-life and should be disconnected if still in use. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

What type of vulnerability is CVE-2018-10561?

CVE-2018-10561 is classified as Improper Authentication (CWE-287). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

Which products and versions are affected by CVE-2018-10561?

CVE-2018-10561 affects dasannetworks gpon router firmware. Check the affected-products list on this page against your deployed version to confirm exposure.

When was CVE-2018-10561 published, and has it been updated?

CVE-2018-10561 was published on May 4, 2018 and was last updated on November 5, 2025. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CISA KEV·Added 2022-03-31 — agencies required to remediate by 2022-04-21

CVE-2018-10561

CRITICAL

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…

Published

May 4, 2018

Updated

Nov 5, 2025

Affected

0 pkgs

Patched

None yet

Exploits

8 known

EPSS Exploitation Probability

via FIRST.org ↗

93.3%probability of exploitation in next 30 days

Very High Risk100th percentile0.00%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Description

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.

Affected Products

1 product · 1 configurations

gpon router firmwaredasannetworks

all

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

EDB-44576remotehardware

GPON Routers - Authentication Bypass / Command Injection

by vpnmentor · May 3, 2018

Exploit-DB Source

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is CVE-2018-10561 in your stack?

O3 detects CVE-2018-10561 across dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

Scan my stack How O3 SCA works