Vulnerability · Published Nov 21, 2025 · Assigned by apple
CVE-2025-31266
Medium 4.3
In plain English
A medium-severity security flaw in macOS from Apple. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 15% of all known vulnerabilities).
Severity (CVSS 3.1)4.3Medium
Exploit odds (30 days)0.2%top 84.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A spoofing issue was addressed with improved truncation when displaying the fully qualified domain name. This issue is fixed in Safari 18.5, macOS Sequoia 15.5. A website may be able to spoof the domain name in the title of a pop-up window.
Affected products (as reported)
Weakness: CWE-451 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L