HOME VULNERABILITIESCVE-2019-18661

HIGH

CVE-2019-18661

CWE-287Published: November 2, 2019· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official Description

Fastweb FASTGate 1.0.1b devices allow partial authentication bypass by changing a certain check_pwd return value from 0 to 1. An attack does not achieve administrative control of a device; however, the attacker can view all of the web pages of the administration console.

Technical Analysis

CVE-2019-18661 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.

From a weakness classification perspective (CWE-287): Authentication bypass vulnerabilities allow attackers to access protected resources without valid credentials.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Vendors & Products

fastweb2 product(s)

fastgate firmwarefastgate

Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://angeloanatrella86.github.io/CVE-2019/

ADVISORYhttps://github.com/angeloanatrella86/CVE-2019/blob/master/index.md

ADVISORYhttps://angeloanatrella86.github.io/CVE-2019/

ADVISORYhttps://github.com/angeloanatrella86/CVE-2019/blob/master/index.md

All References (4)

→

https://angeloanatrella86.github.io/CVE-2019/Exploit · Third Party Advisory

→

https://github.com/angeloanatrella86/CVE-2019/blob/master/index.mdExploit · Third Party Advisory

→

https://angeloanatrella86.github.io/CVE-2019/Exploit · Third Party Advisory

→

https://github.com/angeloanatrella86/CVE-2019/blob/master/index.mdExploit · Third Party Advisory

Quick Facts

CVE IDCVE-2019-18661

CVSS Score7.5 / 10

SeverityHIGH

WeaknessCWE-287

CISA KEVNo

Affected1 vendor(s)

PublishedNov 2, 2019

Related CVEs (CWE-287)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2019-18661 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.

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