Is CVE-2025-48700 actively exploited?

Yes. CVE-2025-48700 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, which means exploitation in the wild has been confirmed.

Can CVE-2025-48700 be exploited remotely?

The attack vector of CVE-2025-48700 has not been classified yet.

What is the CVSS score of CVE-2025-48700?

CVE-2025-48700 has not received a CVSS score yet.

HOME VULNERABILITIESCVE-2025-48700

UNKNOWNCISA KEVIN THE WILD

CVE-2025-48700

Published: April 21, 2026

EPSS:34.51%probability of exploitation in 30 daysPercentile:97.0th

Official Description

Synacor Zimbra Collaboration Suite (ZCS) contains a cross-site scripting vulnerability that could allow attackers to execute arbitrary JavaScript within the user's session, potentially leading to unauthorized access to sensitive information.

NVD Source

Technical Analysis

CVE-2025-48700 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CISA has added CVE-2025-48700 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.

Exploit & PoC Resources

ACTIVE EXPLOITATIONConfirmed exploitation in the wild

Exploit-DB

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

PacketStorm

Security advisories & exploits

External links open in a new tab. Always verify in a controlled environment before use.

News & Research Mentioning CVE-2025-48700

CISA Adds Eight Known Exploited Vulnerabilities to Catalog

CISA Alerts· Apr 20, 2026

CISA has added eight new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation. CVE-2023-27351 PaperCut NG/MF Improper Authentication Vulnerability CVE-2024-27199 JetBrains TeamCity Relative Path Traversal Vulnerability CVE-2025-2749 Kentico Xperience Path Traversal Vulnerability CVE-2025-32975 Quest KACE Systems Management Appliance (SMA) Improper Authentication Vulnerability CVE-2025-48700 Synacor Zimbra Collaboration Suite (ZCS) Cross-site Scripting Vulnerability CVE-2026-20122 Cisco Catalyst SD-WAN Manager Incorrect Use of Privileged APIs Vulnerability CVE-2026-20128 Cisco Catalyst SD-WAN Manager Storing Passwords in a Recoverable Format Vulnerability CVE-2026-20133 Cisco Catalyst SD-WAN Ma [xlite_meta score:63 src:CISA Alerts xlite_fp:0b55e79970c47e4ece69ce1dd3660bb43f47c536c063390ae3b0b0034a186fa0]

Quick Facts

CVE IDCVE-2025-48700

Severity—

CISA KEVYES — Active Exploitation

ExploitIN THE WILD

EPSS (30d)34.51%

PublishedApr 21, 2026

Known Threat Actors

financial

core

financial

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2025-48700 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts
!CISA KEV: Federal agencies must patch per BOD 22-01 timeline
!Active exploitation confirmed — treat as P1

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.

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