What is CVE-2021-45428?

CVE-2021-45428 is a critical-severity vulnerability in Telesquare Tlr-2005ksh, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 9.8/10. Published 2022-01-03.

How severe is CVE-2021-45428?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2021-45428 known to be exploited?

4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Telesquare Tlr-2005ksh

CVE-2021-45428

TLR-2005KSH is affected by an incorrect access control vulnerability. THe PUT method is enabled so an attacker can upload arbitrary files including HTML and CGI formats.

Vulnerability class: IDOR (Insecure Direct Object Reference)

EPSS: 0.569 (99.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

Public proof-of-concept exploits

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Exploit, VDB Entry, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-45428?: CVE-2021-45428 is a critical-severity vulnerability in Telesquare Tlr-2005ksh, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 9.8/10. Published 2022-01-03.
How severe is CVE-2021-45428?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2021-45428 known to be exploited?: 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.