Threats / Dasan / CVE-2018-10561
CVE-2018-10561
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Dasan Gigabit Passive Optical Network (GPON) Routers vulnerability
Dasan GPON routers contain an authentication bypass vulnerability (CWE-287) that allows attackers to bypass access controls. When chained with CVE-2018-10562, this enables remote code execution.
Verdict
Today item — known-exploited.
Authentication bypass in Dasan GPON routers permits unauthenticated access to administrative functions. Exploitation is active in the wild with high probability (EPSS 0.93). Chaining with CVE-2018-10562 leads to remote code execution on affected devices.
01
Is it exploitable?
— the evidence, ranked above the scoreReported exploitation
134 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-31).
Probability (EPSS)
EPSS 0.93316 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: Dasan, Gigabit Passive Optical Network (GPON) Routers. Confirm exact fixed builds in the vendor advisory.
Weakness (CWE)
Mapped to CWE-287 Improper Authentication — weakness family: Authentication.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I bypass authentication controls on the GPON router without valid credentials.
Business
Network perimeter security is compromised; unauthorized access to critical infrastructure devices is established.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I chain this vulnerability with CVE-2018-10562 to achieve remote code execution on the device.
Business
Attacker gains full control of the router, enabling data interception, network manipulation, or lateral movement into connected networks.
3
Lateral reach — past segmentation narrative 3
Attacker
I maintain persistent access by installing backdoors or modifying device firmware.
Business
Long-term compromise of network infrastructure; difficult detection and remediation; potential for widespread customer impact.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05