7.8

CVE-2021-42877: totolink ex1200t_firmware

CVSS: 7.8v2.0HighModified
Published 02-06-2022Last modified 09-07-2026
Open JSON

Vulnerability summary

CVE-2021-42877 is a high (CVSS 7.8) vulnerability in totolink ex1200t_firmware. EPSS estimates a 1.67% chance of exploitation in the next 30 days, higher than 76.5% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
42/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v2.0 (NVD)
EPSS score
1.67%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Timeline

  1. 02-06-2022
    PublishedVulnerability first disclosed.
  2. 09-07-2026
    Last modifiedVulnerability information updated.

Description

TOTOLINK EX1200T V4.1.2cu.5215 contains a denial of service vulnerability in function RebootSystem of the file lib/cste_modules/system which can reboot the system.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

1.67%

Chance of exploitation in the next 30 days

Percentile

77%

Versus all other CVEs

30-day change

0.00 pp

From 1.67% on 21-09-2026

21-09-202621-10-2026
EPSS score
1.67%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • githubUnverified

    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

2 links