What is CVE-2023-26921?

CVE-2023-26921 is a critical-severity vulnerability in Quectel Ag550qcn, classified under OS Command Injection. CVSS score: 9.8/10. Published 2023-04-04.

How severe is CVE-2023-26921?

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

Is CVE-2023-26921 known to be exploited?

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

RCE in Quectel Ag550qcn

CVE-2023-26921

OS Command Injection vulnerability in quectel AG550QCN allows attackers to execute arbitrary commands via ql_atfwd.

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.027 (84.6th 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-78 — OS Command Injection

Public proof-of-concept exploits

References

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

Frequently asked questions

What is CVE-2023-26921?: CVE-2023-26921 is a critical-severity vulnerability in Quectel Ag550qcn, classified under OS Command Injection. CVSS score: 9.8/10. Published 2023-04-04.
How severe is CVE-2023-26921?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2023-26921 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.