CVE-2025-66556: talk from 20.0.0 (inclusive), before 20.1.8 (exclusive), from 21.0.0 (inclusive), before 21.1.2 (exclusive); +1 more…

Affected technology

talk · from 20.0.0 (inclusive), before 20.1.8 (exclusive)
nextcloud

talk · from 21.0.0 (inclusive), before 21.1.2 (exclusive)
nextcloud

security-advisories · < 20.1.8, >= 21.0.0-beta.1, < 21.1.2
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 · No 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 4.3/10) rates confidentiality and availability impact as none; integrity impact as low. The description does not specify what an attacker can achieve beyond these rated impacts.