CVE-2017-9557

Name: CVE-2017-9557
Creator: NVD / NIST
Published: 2017-06-12T15:29:00.16+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.67%

Last modified Jun 17, 2026

CVE-2017-9557 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. register.ghp in EFS Software Easy Chat Server versions 2.0 to 3.1 allows remote attackers to discover passwords by sending the username parameter in conjunction with an empty password parameter, and reading the HTML source code of the response.. EPSS estimates a 1.67% chance of exploitation in the next 30 days.

Description

register.ghp in EFS Software Easy Chat Server versions 2.0 to 3.1 allows remote attackers to discover passwords by sending the username parameter in conjunction with an empty password parameter, and reading the HTML source code of the response.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.67%

73.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-522

Affected Software

Vendor	Product	Versions
Echatserver	Easy Chat Server	>= 2.0, <= 3.1

References

https://www.exploit-db.com/exploits/42153/Exploit, Third Party Advisory, VDB Entry
https://www.exploit-db.com/exploits/42153/Exploit, Third Party Advisory, VDB Entry

Timeline

Published: Jun 12, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-9557?

How severe is CVE-2017-9557?

CVE-2017-9557 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.67% probability of exploitation in the next 30 days.

How do I fix CVE-2017-9557?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-9557?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST