CVE-2025-66554: contacts from 5.0.0 (inclusive), before 5.5.4 (exclusive), from 6.0.0 (inclusive), before 6.0.6 (exclusive), from…

Affected technology

contacts · from 5.0.0 (inclusive), before 5.5.4 (exclusive)
nextcloud

contacts · from 6.0.0 (inclusive), before 6.0.6 (exclusive)
nextcloud

contacts · from 7.0.0 (inclusive), before 7.2.5 (exclusive)
nextcloud

security-advisories · >= 7.0.0-alpha.1, < 7.2.5, >= 6.0.0-alpha1, < 6.0.6, < 5.5.4
nextcloud

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · Low privileges required · User interaction required

Attack conditions (NVD, CVSS 3.1): Network (remote) · Low privileges required · User interaction required

What an attacker can do

Vendor/CNA’s CVSS 3.1 assessment (base score 3.5/10) rates confidentiality and availability impact as none; integrity impact as low. NVD’s CVSS 3.1 assessment (base score 5.4/10) rates confidentiality and integrity impact as low; availability impact as none. The description does not specify what an attacker can achieve beyond these rated impacts.