Vulnerability · Published Nov 21, 2025 · Assigned by BCNY
CVE-2025-13132Dia: Increased Spoof Risk; Missing full screen toast
High 7.4
In plain English
A high-severity security flaw in Dia from The Browser Company of New York. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities).
Severity (CVSS 3.1)7.4High
Exploit odds (30 days)0.3%top 81.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
This vulnerability allowed a site to enter fullscreen, after a user click, without a full-screen notification (toast) appearing. Without this notification, users could potentially be misled about what site they were on if a malicious site renders a fake UI (like a fake address bar.)
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| The Browser Company of New York | Dia | 0 – before 1.6.0 |
Weakness: CWE-1021 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N