CVE-2025-7635 (GCVE-0-2025-7635)
Vulnerability from cvelistv5 – Published: 2025-09-09 20:08 – Updated: 2025-09-12 13:56
VLAI
EPSS
VEX
Title
Calix GigaCenter ONT - Unauthenticated Telnet
Summary
Unauthenticated Telnet access vulnerability in Calix GigaCenter ONT allows root access.This issue affects GigaCenter ONT: 844E, 844G, 844GE, 854GE.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-09-10 13:42 UTC
CWE
- CWE-306 - Missing Authentication for Critical Function
Assigner
Fluid Attacks
CNA
References
3 references
| URL | Tags |
|---|---|
| https://fluidattacks.com/advisories/sal | third-party-advisory |
| https://www.calix.com | productrelated |
| https://revers3everything.com/calix-case-five-0-d… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Calix | GigaCenter ONT |
Affected:
844E
Affected: 844G Affected: 844GE Affected: 854GE cpe:2.3:a:calix:gigacenter_ont:844e:*:*:*:*:*:*:* cpe:2.3:a:calix:gigacenter_ont:844g:*:*:*:*:*:*:* cpe:2.3:a:calix:gigacenter_ont:844ge:*:*:*:*:*:*:* cpe:2.3:a:calix:gigacenter_ont:854ge:*:*:*:*:*:*:* |
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
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vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.