CVE-2021-27104
Accellion FTA OS Command Injection Vulnerability - [Actively Exploited]
Description
Accellion FTA 9_12_370 and earlier is affected by OS command execution via a crafted POST request to various admin endpoints. The fixed version is FTA_9_12_380 and later.
INFO
Published Date :
Feb. 16, 2021, 9:15 p.m.
Last Modified :
March 14, 2025, 8:48 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
3.9
CISA KEV (Known Exploited Vulnerabilities)
For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.
Accellion FTA contains an OS command injection vulnerability exploited via a crafted POST request to various admin endpoints.
Apply updates per vendor instructions.
https://nvd.nist.gov/vuln/detail/CVE-2021-27104
Public PoC/Exploit Available at Github
CVE-2021-27104 has a 11 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-27104.
| URL | Resource |
|---|---|
| https://github.com/accellion/CVEs/blob/main/CVE-2021-27104.txt | Third Party Advisory Broken Link |
| https://www.accellion.com/products/fta/ | Product Vendor Advisory |
| https://github.com/accellion/CVEs/blob/main/CVE-2021-27104.txt | Third Party Advisory Broken Link |
| https://www.accellion.com/products/fta/ | Product Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Build a local copy of Known Exploited Vulnerabilities Catalog by CISA. Server mode for easy querying.
Dockerfile Makefile Go Python
A super simple Cisa KEV lookup CLI tool leveraging DuckDB
Python
Manage OWASP Dependency-Track policy idempotent.
Makefile Go Dockerfile
None
Набор скриптов для парсинга агрегаторов уязвимостей и выгрузки информации в YouTrack
Python
Resources for Security Matters talk 2022
Ostorlab KEV: One-command to detect most remotely known exploitable vulnerabilities. Sourced from CISA KEV, Google's Tsunami, Ostorlab's Asteroid and Bug Bounty programs.
cisa-kev vulnerability 0day cisa exploits
Prioritize your CVEs
vulnerability-management risk-analysis
Rust
Build a local copy of Known Exploited Vulnerabilities Catalog by CISA. Server mode for easy querying.
Dockerfile Makefile Go Python
None
NIST BULK CVE Lookup
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-27104 vulnerability anywhere in the article.
-
Cyber Security News
CL0P Ransomware Attacking Telecommunications & Healthcare Sectors In Large Scale
The CL0P ransomware group has intensified attacks on critical infrastructure sectors, with telecommunications and healthcare organizations worldwide reporting mass data breaches and system encryption. ... Read more
The following table lists the changes that have been made to the
CVE-2021-27104 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Modified Analysis by [email protected]
Mar. 14, 2025
Action Type Old Value New Value Changed Reference Type MITRE: https://github.com/accellion/CVEs/blob/main/CVE-2021-27104.txt Types: Third Party Advisory MITRE: https://github.com/accellion/CVEs/blob/main/CVE-2021-27104.txt Types: Broken Link, Third Party Advisory Changed Reference Type CVE: https://github.com/accellion/CVEs/blob/main/CVE-2021-27104.txt Types: Third Party Advisory CVE: https://github.com/accellion/CVEs/blob/main/CVE-2021-27104.txt Types: Broken Link, Third Party Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Feb. 03, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-78 -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://github.com/accellion/CVEs/blob/main/CVE-2021-27104.txt Added Reference https://www.accellion.com/products/fta/ -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Feb. 17, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:C/I:C/A:C) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://github.com/accellion/CVEs/blob/main/CVE-2021-27104.txt No Types Assigned https://github.com/accellion/CVEs/blob/main/CVE-2021-27104.txt Third Party Advisory Changed Reference Type https://www.accellion.com/products/fta/ No Types Assigned https://www.accellion.com/products/fta/ Product, Vendor Advisory Added CWE NIST CWE-78 Added CPE Configuration OR *cpe:2.3:a:accellion:fta:*:*:*:*:*:*:*:* versions up to (including) 9_12_370
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-27104 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-27104
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
3.39 }} -0.26%
score
0.86910
percentile