CVE-2025-7635
HIGHCVSS 7.7/10EPSS 0.27%
Last modified
CVE-2025-7635 is a high-severity vulnerability rated 7.7/10 on the CVSS scale. Unauthenticated Telnet access vulnerability in Calix GigaCenter ONT allows root access.This issue affects GigaCenter ONT: 844E, 844G, 844GE, 854GE.. EPSS estimates a 0.27% chance of exploitation in the next 30 days.
Description
Unauthenticated Telnet access vulnerability in Calix GigaCenter ONT allows root access.This issue affects GigaCenter ONT: 844E, 844G, 844GE, 854GE.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Calix | Calix Gigacenter Ont | All versions |
| Calix | Calix Gigacenter Ont | 844e |
| Calix | Calix Gigacenter Ont | 844g |
| Calix | Calix Gigacenter Ont | 844ge |
| Calix | Calix Gigacenter Ont | 854ge |
References
- https://fluidattacks.com/advisories/salExploit, Mitigation, Third Party Advisory
- https://revers3everything.com/calix-case-five-0-days-five-cves/Third Party Advisory
- https://www.calix.comProduct
- https://fluidattacks.com/advisories/salExploit, Mitigation, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2025-7635?
Unauthenticated Telnet access vulnerability in Calix GigaCenter ONT allows root access.This issue affects GigaCenter ONT: 844E, 844G, 844GE, 854GE.
How severe is CVE-2025-7635?
CVE-2025-7635 has a CVSS score of 7.7/10 (HIGH severity). The EPSS model estimates a 0.27% probability of exploitation in the next 30 days.
How do I fix CVE-2025-7635?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2025-7635?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST