What is CVE-2021-31698?

CVE-2021-31698 is a critical-severity vulnerability in Quectel Eg25-G, classified under OS Command Injection. CVSS score: 9.8/10. Published 2021-08-12.

How severe is CVE-2021-31698?

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

Is CVE-2021-31698 known to be exploited?

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

RCE in Quectel Eg25-G

CVE-2021-31698

Quectel EG25-G devices through 202006130814 allow executing arbitrary code remotely by using an AT command to place shell metacharacters in quectel_handle_fumo_cfg input in atfwd_daemon.

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.019 (78.2th 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

Weakness classification (CWE)

CWE-78 — OS Command Injection

Public proof-of-concept exploits

References

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

Frequently asked questions

What is CVE-2021-31698?: CVE-2021-31698 is a critical-severity vulnerability in Quectel Eg25-G, classified under OS Command Injection. CVSS score: 9.8/10. Published 2021-08-12.
How severe is CVE-2021-31698?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2021-31698 known to be exploited?: 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.