9.8

CVE-2021-45740: totolink a720r_firmware

CVSS: 9.8v3.1CriticalModified
Published 04-02-2022Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2021-45740 is a critical (CVSS 9.8) vulnerability in totolink a720r_firmware. EPSS estimates a 1.36% chance of exploitation in the next 30 days, higher than 71.5% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
1.36%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Timeline

  1. 04-02-2022
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

TOTOLINK A720R v4.1.5cu.470_B20200911 was discovered to contain a stack overflow in the setWiFiWpsStart function. This vulnerability allows attackers to cause a Denial of Service (DoS) via the pin parameter.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

1.36%

Chance of exploitation in the next 30 days

Percentile

72%

Versus all other CVEs

30-day change

0.00 pp

From 1.36% on 21-09-2026

21-09-202621-10-2026
EPSS score
1.36%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • githubUnverified

    My Vuln

    Maturity: poc

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Totolink1 product

1 vendor · 1 product

References

1 links