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Review reviewHigh

CVE-2021-42877

ex1200t firmware, ex1200t

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
7.5
EPSS
1.68%
74.6% percentile
CISA KEV
Not listed
Published
2022.06.03
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability1.68%
Technical severityCVSS 7.5

Vulnerability overview

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.

Affected product and versions

Product
ex1200t firmware, ex1200t
Affected versions
4.1.2cu.5215
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that ex1200t firmware, ex1200t and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
Not available