Is CVE-2017-16651 actively exploited?

Yes. CVE-2017-16651 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, which means exploitation in the wild has been confirmed.

Can CVE-2017-16651 be exploited remotely?

The attack vector of CVE-2017-16651 has not been classified yet.

What is the CVSS score of CVE-2017-16651?

CVE-2017-16651 has not received a CVSS score yet.

HOME VULNERABILITIESCVE-2017-16651

HIGHCISA KEVIN THE WILD

CVE-2017-16651

Published: November 3, 2021

EPSS:36.42%probability of exploitation in 30 daysPercentile:97.0th

Official Description

Roundcube Webmail contains a file disclosure vulnerability caused by insufficient input validation in conjunction with file-based attachment plugins, which are used by default.

NVD Source

CISA KEV Advisory

Roundcube Webmail File Disclosure Vulnerability

Roundcube Webmail contains a file disclosure vulnerability caused by insufficient input validation in conjunction with file-based attachment plugins, which are used by default.

Added to KEV: 2021-11-03Federal patch deadline: 2022-05-03

Required Action (CISA)

Apply updates per vendor instructions.

Risk Analysis

This Roundcube Webmail vulnerability allows for file disclosure due to insufficient input validation in its attachment plugins. Its confirmed exploitation by CISA (is_in_kev: true) and high EPSS score of 0.36420 indicate a significant and urgent risk, as it can expose sensitive data.

This vulnerability is actively being exploited in the wild and is part of the CISA Known Exploited Vulnerabilities Catalog. This confirms that attackers are successfully leveraging this flaw to disclose files.

Recommended Action

Update Roundcube Webmail to the latest version to patch this file disclosure vulnerability. Review and configure attachment handling settings to ensure strict input validation.

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-2017-16651 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-2017-16651 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.