Deserialization in Roundcube Webmail

CVE-2025-49113

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.

Vulnerability class: Insecure Deserialization

EPSS: 0.905 (99.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: .

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.

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2025-49113?
CVE-2025-49113 is a critical-severity vulnerability in Roundcube Webmail, classified under Deserialization of Untrusted Data. CVSS score: 9.9/10. Published 2025-06-02.
How severe is CVE-2025-49113?
Critical severity. CVSS v3 base score is 9.9 out of 10.
Is CVE-2025-49113 known to be exploited?
Yes. CVE-2025-49113 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-02-20), indicating it is being actively exploited. 62 public proof-of-concept repositories are indexed.