Dasan GPON Router Authentication Bypass via ?images
CVE-2018-10561 is an authentication bypass vulnerability in Dasan GPON home routers. The issue allows an unauthenticated remote attacker to access endpoints that normally require authentication by appending the string "?images" to the requested URI, as demonstrated with paths such as /menu.html?images/ and /GponForm/diag_FORM?images/. By abusing this improper authentication handling, an attacker can reach privileged management functionality without valid credentials. Reporting and observed exploitation commonly pair this flaw with CVE-2018-10562, using CVE-2018-10561 to bypass login protections and then access administrative or diagnostic interfaces that can be leveraged for further compromise.
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Impact, mitigation & remediation
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Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
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Remediation
Patch, then assume compromise.
Exploits
No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
Affected products & vendors
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
23 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An authentication bypass flaw in Dasan GPON routers that Terrabot attempted to exploit, though the observed requests were malformed and empty.
An authentication bypass vulnerability in Dasan GPON devices.
An authentication bypass vulnerability in GPON routers via the ?images parameter.
A vulnerability affecting GPON routers that is associated in the content with router-worm style exploitation attempts and is being actively scanned for.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.