CVE-2019-20049

Name: CVE-2019-20049
Creator: NVD / NIST
Published: 2019-12-27T19:15:12.723+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 12.80%

Last modified Jun 17, 2026

CVE-2019-20049 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. An issue was discovered on Alcatel-Lucent OmniVista 4760 devices. A remote unauthenticated attacker can chain a directory traversal (which helps to bypass authentication) with an insecure file upload to achieve Remote Code Execution as SYSTEM. EPSS estimates a 12.80% chance of exploitation in the next 30 days.

Description

An issue was discovered on Alcatel-Lucent OmniVista 4760 devices. A remote unauthenticated attacker can chain a directory traversal (which helps to bypass authentication) with an insecure file upload to achieve Remote Code Execution as SYSTEM. The directory traversal is in the __construct() whereas the insecure file upload is in SetSkinImages().

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

12.80%

95.8th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Al-Enterprise	Omnivista 4760	All versions

References

https://git.lsd.cat/g/omnivista-rceExploit, Third Party Advisory
https://packetstormsecurity.com/files/155595/Alcatel-Lucent-Omnivista-8770-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
https://www.al-enterprise.com/en/-/media/assets/internet/documents/sa-c0065-ov8770-rce-vulnerability-en.pdfVendor Advisory
https://www.exploit-db.com/exploits/47761Exploit, Third Party Advisory, VDB Entry
https://git.lsd.cat/g/omnivista-rceExploit, Third Party Advisory
https://packetstormsecurity.com/files/155595/Alcatel-Lucent-Omnivista-8770-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
https://www.al-enterprise.com/en/-/media/assets/internet/documents/sa-c0065-ov8770-rce-vulnerability-en.pdfVendor Advisory
https://www.exploit-db.com/exploits/47761Exploit, Third Party Advisory, VDB Entry

Timeline

Published: Dec 27, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-20049?

How severe is CVE-2019-20049?

CVE-2019-20049 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 12.80% probability of exploitation in the next 30 days.

How do I fix CVE-2019-20049?

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-2019-20049?

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

Scan your code now

Source: NVD / NIST