What is CVE-2020-35391?

CVE-2020-35391 is a critical-severity vulnerability in Tenda F3, classified under Direct Request (Forced Browsing). CVSS score: 9.6/10. Published 2021-01-01.

How severe is CVE-2020-35391?

Critical severity. CVSS v3 base score is 9.6 out of 10.

Is CVE-2020-35391 known to be exploited?

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

Vulnerability in Tenda F3

CVE-2020-35391

Tenda N300 F3 12.01.01.48 devices allow remote attackers to obtain sensitive information (possibly including an http_passwd line) via a direct request for cgi-bin/DownloadCfg/RouterCfm.cfg, a related issue to CVE-2017-14942. NOTE: the vulnerability report may suggest that either a ? character must be placed after the RouterCfm.cfg filename, or that the HTTP request headers must be unusual, but it is not known why these are relevant to the device's HTTP response behavior.

EPSS: 0.350 (98.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

Affected products

Tenda F3
Tenda F3_firmware — versions 12.01.01.48
N/a — versions n/a

Weakness classification (CWE)

CWE-425 — Direct Request (Forced Browsing)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2020-35391?: CVE-2020-35391 is a critical-severity vulnerability in Tenda F3, classified under Direct Request (Forced Browsing). CVSS score: 9.6/10. Published 2021-01-01.
How severe is CVE-2020-35391?: Critical severity. CVSS v3 base score is 9.6 out of 10.
Is CVE-2020-35391 known to be exploited?: 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.