How severe is CVE-2020-25499?

CVE-2020-25499 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-25499 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-25499?

CVE-2020-25499 primarily affects Totolink A3002r Firmware. In total, 13 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-25499?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-25499 published?

CVE-2020-25499 was published on 2020-12-09 and last updated on 2026-06-17.

CVE-2020-25499

CVE-2020-25499 is a high-severity vulnerability in Totolink A3002r Firmware with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
EPSS exploit prediction: 4% (90th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Totolink A3002r Firmware
Published: 2020-12-09
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-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.
How severe is CVE-2020-25499?: CVE-2020-25499 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-25499 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-25499?: CVE-2020-25499 primarily affects Totolink A3002r Firmware. In total, 13 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-25499?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-25499 published?: CVE-2020-25499 was published on 2020-12-09 and last updated on 2026-06-17.

References

Affected products (13)

cpe:2.3:o:totolink:a3002r_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:totolink:a3002ru-v1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:totolink:a3002ru-v2_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:totolink:a702r-v2_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:totolink:a702r-v3_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:totolink:n100re-v3_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:totolink:n150rt_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:totolink:n200re-v3_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:totolink:n200re-v4_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:totolink:n210re_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:totolink:n300rh-v3_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:totolink:n300rt_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:totolink:n302r_plus_firmware:*:*:*:*:*:*:*:*

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CVE-2025-45858 — Critical (CVSS 9.8): TOTOLINK A3002R v4.0.0-B20230531.1404 was discovered to contain a command injection vulnerability via the FUN_00459fdc…
CVE-2025-25579 — Critical (CVSS 9.8): TOTOLINK A3002R V4.0.0-B20230531.1404 is vulnerable to Command Injection in /bin/boa via bandstr.

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