CVE-2020-5771

Name: CVE-2020-5771
Creator: NVD / NIST
Published: 2020-08-03T20:15:16.323+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.95%

Last modified Jun 17, 2026

CVE-2020-5771 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Improper Input Validation in Teltonika firmware TRB2_R_00.02.04.01 allows a remote, authenticated attacker to gain root privileges by uploading a malicious backup archive.. EPSS estimates a 1.95% chance of exploitation in the next 30 days.

Description

Improper Input Validation in Teltonika firmware TRB2_R_00.02.04.01 allows a remote, authenticated attacker to gain root privileges by uploading a malicious backup archive.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.95%

77.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Teltonika-Networks	Trb245 Firmware	00.02.04.01

References

https://www.tenable.com/security/research/tra-2020-48Exploit, Third Party Advisory
https://www.tenable.com/security/research/tra-2020-48Exploit, Third Party Advisory

Timeline

Published: Aug 3, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-5771?

Improper Input Validation in Teltonika firmware TRB2_R_00.02.04.01 allows a remote, authenticated attacker to gain root privileges by uploading a malicious backup archive.

How severe is CVE-2020-5771?

CVE-2020-5771 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.95% probability of exploitation in the next 30 days.

How do I fix CVE-2020-5771?

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-2020-5771?

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

Scan your code now

Source: NVD / NIST