Is CVE-2025-49113 actively exploited?

Yes. CVE-2025-49113 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, which means exploitation in the wild has been confirmed.

Can CVE-2025-49113 be exploited remotely?

Yes. CVE-2025-49113 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2025-49113?

CVE-2025-49113 has a CVSS score of 8.8 (HIGH) and an EPSS exploitation probability of 90.36%.

HOME VULNERABILITIESCVE-2025-49113

HIGHCISA KEVIN THE WILD

CVE-2025-49113

Published: February 20, 2026

8.8

CVSS v3.1

EPSS:90.36%probability of exploitation in 30 daysPercentile:99.6th

Official 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.

NVD Source

CISA KEV Advisory

RoundCube Webmail Deserialization of Untrusted Data Vulnerability

Added to KEV: 2026-02-20Federal patch deadline: 2026-03-13

Required Action (CISA)

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

Risk Analysis

This vulnerability in RoundCube Webmail is a deserialization of untrusted data flaw that allows remote code execution by authenticated users. With a CVSS score of 8.8 and an EPSS score of 0.90361, it presents a critical risk with a very high likelihood of exploitation. The fact that it is in CISA's KEV catalog confirms it has been actively exploited.

This vulnerability is being actively exploited in the wild and is listed in CISA's KEV catalog, indicating confirmed real-world exploitation. It is remotely exploitable by authenticated users.

Recommended Action

Apply the latest security updates and patches for RoundCube Webmail to address this deserialization vulnerability. Ensure strict validation of the '_from' parameter in program/actions/settings/upload.php.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2025-49113 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

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

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.

CISA has added CVE-2025-49113 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.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.Low

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Affected Vendors & Products

Mentioned vendors (from description):

PHP

CPE data not yet available in NVD for this CVE.

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-2025-49113

CISA Adds Two Actively Exploited Roundcube Flaws to KEV Catalog

The Hacker News· Feb 21, 2026

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Friday added two security flaws impacting Roundcube webmail software to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation. The vulnerabilities in question are listed below - CVE-2025-49113 (CVSS score: 9.9) - A deserialization of untrusted data vulnerability that allows remote code [xlite_meta score:56 src:The Hacker News xlite_fp:2ef9a0bf57c93aece5caa6679edf356b17346e17bf2f1ca592f8cc1ff541e7c7]

CISA Adds Two Known Exploited Vulnerabilities to Catalog

CISA Alerts· Feb 20, 2026

CISA has added two new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation. CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Vulnerability CVE-2025-68461 RoundCube Webmail Cross-site Scripting Vulnerability These types of vulnerabilities are frequent attack vectors for malicious cyber actors and pose significant risks to the federal enterprise. Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities established the KEV Catalog as a living list of known Common Vulnerabilities and Exposures (CVEs) that carry significant risk to the federal enterprise. BOD 22-01 requires Federal Civilian Executive Branch (FCEB) agencies to rem [xlite_meta score:51 src:CISA Alerts xlite_fp:416fb3cee3864e4a3a31b8dc6caf8a7cd0a3615ef08ee3f533136171c8cbce55]