Calix GigaCenter ONT (Quantenna SoC) - Excessive Privileges

published 2025-09-09 last yr. modified 2026-06-17 4mo ago also EUVD-2025-27475

cvss: 7.0; version 4.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 12%
public exploits: 0; none known

Excessive Privileges vulnerability in Calix GigaCenter ONT (Quantenna SoC modules) allows Privilege Abuse.This issue affects GigaCenter ONT: 844E, 844G, 844GE, 854GE, 812G, 813G, 818G.

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CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: last yr. (2025-09-10)

Exploit prediction

0.22% chance of exploitation in the next 30 days, higher than 12% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	4.0	7.0	CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CNA	4.0	7.0	CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

Calix GigaCenter ONT

Classification

Weakness

CWE-269 Improper Privilege Management

References

fluidattacks.com /advisories/forty
third-party-advisory
calix.com
product, related
revers3everything.com /calix-case-five-0-days-five-cves/
third-party-advisory

Sources

CVE List CVE-2025-53913
NVD CVE-2025-53913

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