High severity7.7NVD Advisory· Published Sep 9, 2025· Updated Jun 17, 2026
CVE-2025-7635
CVE-2025-7635
Description
Unauthenticated Telnet access vulnerability in Calix GigaCenter ONT allows root access.This issue affects GigaCenter ONT: 844E, 844G, 844GE, 854GE.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
9(expand)+ 1 more
- (no CPE)
- (no CPE)range: 844E
cpe:2.3:a:calix:calix_gigacenter_ont:*:*:*:*:*:*:*:*+ 4 more
- cpe:2.3:a:calix:calix_gigacenter_ont:*:*:*:*:*:*:*:*
- cpe:2.3:a:calix:calix_gigacenter_ont:844e:*:*:*:*:*:*:*
- cpe:2.3:a:calix:calix_gigacenter_ont:844g:*:*:*:*:*:*:*
- cpe:2.3:a:calix:calix_gigacenter_ont:844ge:*:*:*:*:*:*:*
- cpe:2.3:a:calix:calix_gigacenter_ont:854ge:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
3- fluidattacks.com/advisories/salnvdExploitMitigationThird Party Advisory
- revers3everything.com/calix-case-five-0-days-five-cves/nvdThird Party Advisory
- www.calix.comnvdProduct
News mentions
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