Known exploited · Dasan
CVE-2018-10561: Dasan GPON Routers Authentication Bypass Vulnerability
What it is
Dasan GPON Routers contain an authentication bypass vulnerability. When combined with CVE-2018-10562, exploitation can allow an attacker to perform remote code execution.
- Vendor
- Dasan
- Product
- Gigabit Passive Optical Network (GPON) Routers
- Added to KEV
- March 31, 2022
- CISA due date
- April 21, 2022
- Ransomware use
- Unknown
- Weakness
- CWE-287: Improper Authentication
What CISA requires
The impacted product is end-of-life and should be disconnected if still in use.
Forensic triage
No
What to do now
- Find every instance of Gigabit Passive Optical Network (GPON) Routers you run, including the forgotten ones, and check its version against the vendor advisory.
- Apply the vendor's fix or mitigation, before April 21, 2022 if you are bound by CISA's deadline, sooner if it faces the internet.
- Assume it was tried against you already: look for signs of exploitation from the date it was added, not from the day you patched.
References
H2 Security
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Start freeSource: CISA Known Exploited Vulnerabilities Catalog (public domain), catalog version 2026.10.01.