Is CVE-2017-15235 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2017-15235, but active exploitation has not been confirmed.

Can CVE-2017-15235 be exploited remotely?

Yes. CVE-2017-15235 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2017-15235?

CVE-2017-15235 has a CVSS score of 7.5 (HIGH).

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HIGHPOC

CVE-2017-15235

CWE-425Published: October 11, 2017· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official Description

The File Manager (gollem) module 3.0.11 in Horde Groupware 5.2.21 allows remote attackers to bypass Horde authentication for file downloads via a crafted fn parameter that corresponds to the exact filename.

NVD Source

Technical Analysis

CVE-2017-15235 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 7.5.

A proof-of-concept (PoC) exploit exists for CVE-2017-15235. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.