Administrative Server in Micro Focus Host Access Management and Security Server (MSS) and Reflection for the Web (RWeb) and Reflection Secu…

published 2016-11-29 9 y ago modified 2026-06-17 4 mo ago also EUVD-2016-6700

cvss: 6.5; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 2.2%; EPSS 2.2% chance of exploitation in 30 days, percentile 82%
public exploits: 0; none known

Administrative Server in Micro Focus Host Access Management and Security Server (MSS) and Reflection for the Web (RWeb) and Reflection Security Gateway (RSG) and Reflection ZFE (ZFE) allows remote unauthenticated attackers to read arbitrary files via a specially crafted URL that allows limited directory traversal. Applies to MSS 12.3 before 12.3.326 and MSS 12.2 before 12.2.342 and RSG 12.1 before 12.1.362 and RWeb 12.3 before 12.3.312 and RWeb 12.2 before 12.2.342 and RWeb 12.1 before 12.1.362 and ZFE 2.0.1 before 2.0.1.18 and ZFE 2.0.0 before 2.0.0.52 and ZFE 1.4.0 before 1.4.0.14.

Exploit prediction

2.22% chance of exploitation in the next 30 days, higher than 82% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.0	6.5	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:P/I:N/A:N

Affected products

n/a Micro Focus MSS, RWeb, ZFE, RSG 1.x, 2.x, 12.x

Classification

Weakness

CWE-22 Improper Limitation of a Pathname to a Restricted Directory
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

Sources

CVE List CVE-2016-5765
NVD CVE-2016-5765

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary