CVE-2025-7635
Calix GigaCenter ONT - Unauthenticated Telnet
HIGH
7.7
CVSS Score
Published: September 9, 2025 at 08:08 PM UTC
Updated: June 17, 2026 at 10:05 AM UTC
2 products affected across 1 vendorCalix Gigacenter OntGigacenter
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Severity
HIGH7.7
Exploit prediction
EPSS 0.4%
SSVC
PoC
Description
Unauthenticated Telnet access vulnerability in Calix GigaCenter ONT allows root access.This issue affects GigaCenter ONT: 844E, 844G, 844GE, 854GE.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (3)
Third Party AdvisoryExploitMitigation
Source: [email protected]
https://fluidattacks.com/advisories/salThird Party Advisory
Source: [email protected]
https://revers3everything.com/calix-case-five-0-days-five-cves/SSVC — Action Prioritization
SSVCPoCNot automatableTotal impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- NONE
Vector?
Quick Info
StatusANALYZED
CWE
CWE-306
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