9.8

CVE-2020-24987: tendacn ac18_firmware Improper Authentication

Modified
Published 04-09-2020Last modified 04-08-2024

Vulnerability summary

CVE-2020-24987 is a critical (CVSS 9.8) Improper Authentication vulnerability in tendacn ac18_firmware. EPSS estimates a 3.10% chance of exploitation in the next 30 days, higher than 87.6% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
3.10%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 04-09-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

Tenda AC18 Router through V15.03.05.05_EN and through V15.03.05.19(6318) CN devices could cause a remote code execution due to incorrect authentication handling of vulnerable logincheck() function in /usr/lib/lua/ngx_authserver/ngx_wdas.lua file if the administrator UI Interface is set to "radius".

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

3.10%

Chance of exploitation in the next 30 days

Percentile

88%

Versus all other CVEs

30-day change

No change 0.00 pp

From 3.10% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Tendacn1 product

1 vendor · 1 product

References

3 links