This vulnerability allows remote attackers to bypass authentication on vulnerable installations of NetGain Systems Enterprise Manager 7.2.6…

published 2018-01-23 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-7781

cvss: 8.8; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 3.3%; EPSS 3.3% chance of exploitation in 30 days, percentile 88%
public exploits: 0; none known

This vulnerability allows remote attackers to bypass authentication on vulnerable installations of NetGain Systems Enterprise Manager 7.2.699 build 1001. User interaction is required to exploit this vulnerability. The specific flaw exists within the MainFilter servlet. The issue results from the lack of proper string matching inside the doFilter method. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of Administrator. Was ZDI-CAN-5099.

Exploit prediction

3.33% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.0	8.8	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD	2.0	6.8	AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected products

NetGain Systems NetGain Systems Enterprise Manager

Classification

Weakness

CWE-289 Authentication Bypass by Alternate Name
CWE-287 Improper Authentication

References

zerodayinitiative.com /advisories/ZDI-17-955
third-party-advisory, vdb-entry

Sources

CVE List CVE-2017-16590
NVD CVE-2017-16590

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