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Vulnerabilities

Vulnerability · CVE-2020-25499

TOTOLINK a3002r_firmware Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Published Jan 3, 2024 · catalog updated Jan 3, 2024 · TOTOLINK

Patch now

CVE-2020-25499 is in the CISA known-exploited catalog. Confirm TOTOLINK against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
Unknown—
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
4.20%
Remediation
Remediation guidance
Affected products
vendor TOTOLINK a3002r_firmware

TOTOLINK A3002RU-V2.0.0 B20190814.1034 allows authenticated remote users to modify the system's 'Run Command'. An attacker can use this functionality to execute arbitrary OS commands on the router.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor TOTOLINK a3002r_firmwareversion unspecified

How to fix CVE-2020-25499

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2020-25499 is in the CISA known-exploited catalog. Confirm TOTOLINK against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

No weakness class is stored. EPSS 4.20%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jan 3, 2024 · VulnCheck KEV

    Detected

    TOTOLINK A3002RU-V2.0.0 B20190814.1034 allows authenticated remote users to modify the system's 'Run Command'. An attacker can use this functionality to execute arbitrary OS commands on the router.

  2. Jan 3, 2024 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Sources

  • CVE.orgVulnerability recordCVE-2020-25499

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2020-25499

    30-day exploitation probability 4.2%

    first.org
  • VulnCheck KEVConfirmed exploitationCVE-2020-25499

    TOTOLINK A3002RU-V2.0.0 B20190814.1034 allows authenticated remote users to modify the system's 'Run Command'. An attacker can use this functionality to execute arbitrary OS commands on the router.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.