CVE-2021-27104

Accellion FTA OS Command Injection Vulnerability

Exploited in attacks Used by ransomware Critical 9.8 Attack chance: 57%

What it is

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.

CISA: Accellion FTA contains an OS command injection vulnerability exploited via a crafted POST request to various admin endpoints.

What to do

Apply updates per vendor instructions.

Deadline for US federal agencies: November 17, 2021

Added to the CISA list: November 3, 2021
Published: February 16, 2021
Severity: Critical 9.8 CVSS 3.1
Chance of attacks in the next 30 days (EPSS): 57% in the top 0.9% of all known vulnerabilities
Weakness: CWE-20 CWE-78
More details: NVD · CVE.org · CISA

All references (2)

More exploited flaws from Accellion

Added	Vulnerability	Product	Severity	Attack chance
Nov 3, 2021	SQL InjectionCVE-2021-27101used by ransomware	FTA	Critical 9.8	6.0%
Nov 3, 2021	OS Command InjectionCVE-2021-27102used by ransomware	FTA	High 7.8	3.7%
Nov 3, 2021	Server-Side Request Forgery (SSRF)CVE-2021-27103used by ransomware	FTA	Critical 9.8	11%

All of them →

Sources: Known Exploited Vulnerabilities (CISA, public domain), CVE records (cve.org) and EPSS (FIRST). The chance of attacks is the EPSS estimate that someone will try to exploit the flaw in the next 30 days.