How severe is CVE-2020-5769?

CVE-2020-5769 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2020-5769 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-5769?

CVE-2020-5769 affects Teltonika-networks Gateway Trb245 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-5769?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-5769 published?

CVE-2020-5769 was published on 2020-07-17 and last updated on 2026-06-17.

CVE-2020-5769

CVE-2020-5769 is a medium-severity vulnerability in Teltonika-networks Gateway Trb245 Firmware with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Teltonika-networks Gateway Trb245 Firmware
Published: 2020-07-17
Last modified: 2026-06-17

Description

Insufficient output sanitization in Teltonika firmware TRB2_R_00.02.02 allows a remote, authenticated attacker to conduct persistent cross-site scripting (XSS) attacks by injecting malicious client-side code into the 'URL/ Host / Connection' form in the 'DATA TO SERVER' configuration section.

Frequently asked questions

What is CVE-2020-5769?: Insufficient output sanitization in Teltonika firmware TRB2_R_00.02.02 allows a remote, authenticated attacker to conduct persistent cross-site scripting (XSS) attacks by injecting malicious client-side code into the 'URL/ Host / Connection' form in the 'DATA TO SERVER' configuration section.
How severe is CVE-2020-5769?: CVE-2020-5769 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2020-5769 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-5769?: CVE-2020-5769 affects Teltonika-networks Gateway Trb245 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-5769?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-5769 published?: CVE-2020-5769 was published on 2020-07-17 and last updated on 2026-06-17.

References

https://www.tenable.com/security/research/tra-2020-43-0

Affected products (1)

cpe:2.3:o:teltonika-networks:gateway_trb245_firmware:trb2_r_00.02.02:*:*:*:*:*:*:*

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