CVE-2025-63729
Published: 25 November 2025
Summary
CVE-2025-63729 is a critical-severity Exposure of Sensitive Information to an Unauthorized Actor (CWE-200) vulnerability in Syrotech Sy-Gpon-1110-Wdont Firmware. Its CVSS base score is 9.0 (Critical).
Operationally, ranked at the 1.0th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-199605
Vulnerability details
An issue was discovered in Syrotech SY-GPON-1110-WDONT SYRO_3.7L_3.1.02-240517 allowing attackers to exctract the SSL Private Key, CA Certificate, SSL Certificate, and Client Certificates in .pem format in firmware in etc folder.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
A data action map identifies locations where sensitive information may be exposed to unauthorized actors during processing or transfer.
Directly prevents exposure of critical organizational information by applying OPSEC processes across the SDLC.
Monitoring directly detects unauthorized disclosure of sensitive information, enabling response to exposures.
Coordinating audit logging across organizational boundaries reduces the risk of sensitive audit data being exposed to unauthorized actors during transmission.
The control's identification, isolation, alerting, and eradication steps directly limit the impact and exploitation window of unauthorized sensitive information exposure.
The media protection policy defines requirements and procedures to prevent unauthorized disclosure or access to sensitive information on media.
Requiring organization-defined processing conditions on specific PII categories directly reduces the chance that personal data will be exposed to unauthorized actors.
The assessment process surfaces design decisions that could expose sensitive (including PII) data to unauthorized actors, prompting controls that reduce such exposure.