What is CVE-2021-21740?

CVE-2021-21740 is a low-severity vulnerability in ZTE Zxhn H2640, classified under Improper Link Resolution Before File Access. CVSS score: 2.4/10. Published 2021-08-09.

How severe is CVE-2021-21740?

Low severity. CVSS v3 base score is 2.4 out of 10.

Vulnerability in ZTE Zxhn H2640

CVE-2021-21740

There is an information leak vulnerability in the digital media player (DMS) of ZTE's residential gateway product. The attacker could insert the USB disk with the symbolic link into the residential gateway, and access unauthorized directory information through the symbolic link, causing information leak.

EPSS: 0.004 (36.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 2.4 (Low). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

Zte Zxhn_h2640
Zte Zxhn_h2640_firmware — versions 10.0.0c6_ty
N/a Zxhn H2640 — versions V10.0.0C6_TY

Weakness classification (CWE)

CWE-59 — Improper Link Resolution Before File Access

References

psirt@zte.com.cn (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-21740?: CVE-2021-21740 is a low-severity vulnerability in ZTE Zxhn H2640, classified under Improper Link Resolution Before File Access. CVSS score: 2.4/10. Published 2021-08-09.
How severe is CVE-2021-21740?: Low severity. CVSS v3 base score is 2.4 out of 10.