CVE-2025-27915 — exposed on the internet

CVE-2025-27915: n/a

Internet exposure observed by OffSeq scans · last 30 days

Found on 7 internet-exposed hosts by OffSeq scans; no in-the-wild exploitation has been observed against OffSeq honeypots in this window.

About CVE-2025-27915

An issue was discovered in Zimbra Collaboration (ZCS) 9.0 and 10.0 and 10.1. A stored cross-site scripting (XSS) vulnerability exists in the Classic Web Client due to insufficient sanitization of HTML content in ICS files. When a user views an e-mail message containing a malicious ICS entry, its embedded JavaScript executes via an ontoggle event inside a <details> tag. This allows an attacker to run arbitrary JavaScript within the victim's session, potentially leading to unauthorized actions such as setting e-mail filters to redirect messages to an attacker-controlled address. As a result, an attacker can perform unauthorized actions on the victim's account, including e-mail redirection and data exfiltration.

CWE-79

OffSeq internet scanning found CVE-2025-27915 on 7 exposed hosts in the last 30 days. OffSeq honeypots have not recorded in-the-wild exploitation of this CVE in the current window — this page tracks its exposure footprint and status; if exploitation begins, the live honeypot signal will appear here.

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