What is CVE-2021-45738?

CVE-2021-45738 is a critical-severity vulnerability in Totolink X5000r, classified under Command Injection. CVSS score: 9.8/10. Published 2022-02-04.

How severe is CVE-2021-45738?

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

Is CVE-2021-45738 known to be exploited?

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

RCE in Totolink X5000r

CVE-2021-45738

TOTOLINK X5000R v9.1.0u.6118_B20201102 was discovered to contain a command injection vulnerability in the function UploadFirmwareFile. This vulnerability allows attackers to execute arbitrary commands via the parameter FileName.

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.044 (90.2th 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

Totolink X5000r
Totolink X5000r_firmware — versions 9.1.0u.6118_b20201102
N/a — versions n/a

Weakness classification (CWE)

CWE-77 — Command Injection

Public proof-of-concept exploits

References

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

Frequently asked questions

What is CVE-2021-45738?: CVE-2021-45738 is a critical-severity vulnerability in Totolink X5000r, classified under Command Injection. CVSS score: 9.8/10. Published 2022-02-04.
How severe is CVE-2021-45738?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2021-45738 known to be exploited?: 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.