CVE-2025-29524: n/a
Source CVE Database V5
Not known to be exploited · CVSS 6.5 Medium.
Data as of 26 Oct 2026, 06:26 UTC
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 25% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 25 Aug 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.
What to do
AI-suggested
To mitigate this vulnerability, European organizations should first identify all DASAN GPON ONU H660WM and H660WMR210825 devices within their networks. Since no official patches are currently available, immediate mitigation steps include restricting access to the device management interfaces by implementing network segmentation and firewall rules that limit access to trusted management networks only. Disabling or restricting access to the vulnerable /cgi-bin/system_diagnostic_main.asp endpoint, if possible, can reduce exposure. Monitoring network traffic for unusual access patterns to the CGI interface can help detect exploitation attempts. Organizations should also engage with DASAN or their equipment vendors to obtain firmware updates or security advisories addressing this issue. Employing strong network access controls, such as VPNs or management VLANs, and enforcing strict authentication for device management interfaces will further reduce risk. Finally, integrating these devices into existing vulnerability management and incident response workflows will ensure timely detection and remediation of any exploitation attempts.
Description
Incorrect access control in the component /cgi-bin/system_diagnostic_main.asp of DASAN GPON ONU H660WM H660WMR210825 allows attackers to access sensitive information.