CVE-2020-11766

Name: CVE-2020-11766
Creator: NVD / NIST
Published: 2020-05-19T20:15:10.023+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.85%

Last modified Jun 17, 2026

CVE-2020-11766 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. sendfax.php in iFAX AvantFAX before 3.3.6 and HylaFAX Enterprise Web Interface before 0.2.5 allows authenticated Command Injection.. EPSS estimates a 1.85% chance of exploitation in the next 30 days.

Description

sendfax.php in iFAX AvantFAX before 3.3.6 and HylaFAX Enterprise Web Interface before 0.2.5 allows authenticated Command Injection.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

1.85%

76.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-78

Affected Software

Vendor	Product	Versions
Ifax	Hylafax	>= 0.2.0, < 0.2.5
Avantfax	Avantfax	>= 3.3.0, < 3.3.6

References

ftp://ftp.ifax.com/security/CVE-2020-11766.htmlVendor Advisory
ftp://ftp.ifax.com/security/CVE-2020-11766.htmlVendor Advisory

Timeline

Published: May 19, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-11766?

sendfax.php in iFAX AvantFAX before 3.3.6 and HylaFAX Enterprise Web Interface before 0.2.5 allows authenticated Command Injection.

How severe is CVE-2020-11766?

CVE-2020-11766 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.85% probability of exploitation in the next 30 days.

How do I fix CVE-2020-11766?

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-2020-11766?

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

Scan your code now

Source: NVD / NIST