CVE-2025-49553: 
NixOS vulnerability analysis and mitigation

Adobe Connect versions 12.9 and earlier are affected by a DOM-based Cross-Site Scripting (XSS) vulnerability identified as CVE-2025-49553. The vulnerability was disclosed on October 14, 2025, and allows attackers to execute malicious scripts in a victim's browser. This vulnerability requires user interaction, specifically requiring the victim to navigate to a crafted web page (NVD).

The vulnerability is classified as a DOM-based Cross-Site Scripting (XSS) issue (CWE-79: Improper Neutralization of Input During Web Page Generation). It has received a CVSS v3.1 base score of 9.3 (CRITICAL) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N, indicating network accessibility, low attack complexity, no privileges required, and user interaction needed (NVD).

A successful exploitation of this vulnerability can lead to session takeover, with high confidentiality and integrity impact. The scope is changed, indicating that the vulnerability can affect resources beyond the vulnerable component (NVD, Cyble).

Adobe has released security updates to address this vulnerability. Users are advised to upgrade to Adobe Connect versions newer than 12.9 to mitigate the risk (NVD).