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Fencer Vulns
high 8.8

CVE-2020-25499 json

TOTOLINK A3002RU-V2.0.0 B20190814.1034 allows authenticated remote users to modify the system's 'Run Command'. An attacker can use this fun…

published 2020-12-09 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-18184

cvss
8.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.2%
EPSS 4.2% chance of exploitation in 30 days, percentile 91%
public exploits
0
none known

Summary

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.

Patch / fix

  • totolink a3002r_firmware 1.1.1-b20200824.0128
  • totolink a3002ru-v1_firmware 3.4.0-b20201030.1754
  • totolink a3002ru-v2_firmware 2.1.1-b20200911.1756
  • totolink a702r-v2_firmware 1.0.0-b20201028.1743
  • totolink a702r-v3_firmware 1.0.0-b20201103.1713
  • totolink n100re-v3_firmware 3.4.0-b20201030.0926
  • totolink n150rt_firmware 3.4.0-b20201030.1142
  • totolink n200re-v3_firmware 3.4.0-b20201029.1811
  • totolink n200re-v4_firmware 4.0.0-b20200805.1507
  • totolink n210re_firmware 1.0.0-b20201030.2030
  • totolink n300rh-v3_firmware 3.2.4-b20201029.1838
  • totolink n300rt_firmware 3.4.0-b20201026.2033
  • totolink n302r_plus_firmware 3.4.0-b20201028.2224

Exploit prediction

4.20% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/kdoos/Vulnerabilities/blob/main/RCE_TOTOLINK-A3002RU-V2 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 9.0 AV:N/AC:L/Au:S/C:C/I:C/A:C

Classification

Weakness
  • CWE-78 Improper Neutralization of Special Elements used in an OS Command
  • CWE-862 Missing Authorization

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.