CVE-2026-121618

MEDIUM 5.3

Linksys E5600 Factory Quality Control fqc.cgi information disclosure

CVSS Score

5.3

EPSS Score

0.0%

EPSS Percentile

0th

A weakness has been identified in Linksys E5600 1.1.0.26. This affects an unknown part of the file /cgi-bin/fqc.cgi of the component Factory Quality Control. This manipulation causes information disclosure. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way. This vulnerability only affects products that are no longer supported by the maintainer.

CWE	CWE-200 CWE-284
Vendor	linksys
Product	e5600
Published	Nov 4, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:C

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

Linksys / E5600

1.1.0.26

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/430466 vuldb.com: https://vuldb.com/vuln/430466/cti vuldb.com: https://vuldb.com/cve/CVE-2026-121618 vuldb.com: https://vuldb.com/submit/1023314 github.com: https://github.com/Zimo-666/E5600-cves/tree/main/05-fqc-info-disclosure linksys.com: https://www.linksys.com/

Credits

🔍 liuyingqi (VulDB User) VulDB CNA Team