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Fencer Vulns
high 7.2

CVE-2020-21481 json

An arbitrary file upload vulnerability in RGCMS v1.06 allows attackers to execute arbitrary code via a crafted .txt file which is later cha…

published 2021-09-15 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-14253

cvss
7.2
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.7%
EPSS 1.7% chance of exploitation in 30 days, percentile 76%
public exploits
0
none known

Summary

An arbitrary file upload vulnerability in RGCMS v1.06 allows attackers to execute arbitrary code via a crafted .txt file which is later changed to a PHP file.

Exploit prediction

1.65% chance of exploitation in the next 30 days, higher than 76% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • porlockz.com https://www.porlockz.com/A-arbitrary-file-upload-vulnerability-in-RGCMS-V1-06/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.2 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.5 AV:N/AC:L/Au:S/C:P/I:P/A:P

Classification

Weakness
  • CWE-434 Unrestricted Upload of File with Dangerous Type

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.