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CVE-2025-63729

Syrotech Sy-gpon-1110-wdont Firmware information disclosure

9.0 CRITICALPublic exploitEPSS 0.09%
  1. Published25 Nov 2025

Description

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.

CVSS 3.1 breakdown

Attack vectorLocal
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

Affected products

Syrotech Sy-gpon-1110-wdont Firmware3.1.02-240517

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2025-63729 being actively exploited?

CVE-2025-63729 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.09%.

How severe is CVE-2025-63729?

CVE-2025-63729 has a CVSS 3.1 base score of 9.0, rated critical. EPSS estimates a 0.09% probability of exploitation.

Which products are affected by CVE-2025-63729?

Affected products include Syrotech Sy-gpon-1110-wdont Firmware.

How do I fix CVE-2025-63729?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-63729 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.