CVE-2025-49113 | Roundcube Webmail before 1.5.10 and 1.6.x before 1.6.11 allo… | CVSS 9.9 CRITICAL

Description

Roundcube Webmail before 1.5.10 and 1.6.x before 1.6.11 allows remote code execution by authenticated users because the _from parameter in a URL is not validated in program/actions/settings/upload.php, leading to PHP Object Deserialization.

Metadata

CVE ID: CVE-2025-49113
State: PUBLISHED
Assigner: mitre
Reserved: 2025-06-02 00:00 UTC
Published: 2025-06-02 00:00 UTC
Last updated: 2026-02-21 04:56 UTC
Primary CWE: CWE-502
CWE-502 Deserialization of Untrusted Data
Vendor / Product: Roundcube / Webmail
Sources: cve.org · NVD

Severity & Metrics

9.9 CRITICAL CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

SSVC — CISA Coordinator

Exploitation: ACTIVE
Automatable: no
Tech. Impact: total

CISA Known Exploited Vulnerability

Vulnerability name: RoundCube Webmail Deserialization of Untrusted Data Vulnerability
Vendor: Roundcube
Product: Webmail
Added to KEV: 2026-02-20
Due date: 2026-03-13
Ransomware: Not known

Required action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CISA description

RoundCube Webmail contains a deserialization of untrusted data vulnerability that allows remote code execution by authenticated users because the _from parameter in a URL is not validated in program/actions/settings/upload.php.

Affected products (1)

Vendor	Product	Platform	Versions
Roundcube	Webmail	—	0 < 1.5.10, 1.6.0 < 1.6.11

Weakness (CWE)

CWE	Source	Description
CWE-502	cna	CWE-502 Deserialization of Untrusted Data

CVSS scores (1)

Score	Severity	Version	Source	Vector
9.9	CRITICAL	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

References (10)