HOMEVULNERABILITIESCVE-2021-27102
HIGHCISA KEVIN THE WILD

CVE-2021-27102

Published: November 3, 2021

EPSS:0.28%probability of exploitation in 30 daysPercentile:51.2th

Official Description

Accellion FTA contains an OS command injection vulnerability exploited via a local web service call.

NVD Source

CISA KEV Advisory

Accellion FTA OS Command Injection Vulnerability

Accellion FTA contains an OS command injection vulnerability exploited via a local web service call.

Added to KEV: 2021-11-03Federal patch deadline: 2021-11-17⚠ USED IN RANSOMWARE CAMPAIGNS
Required Action (CISA)

Apply updates per vendor instructions.

Risk Analysis

This vulnerability in Accellion FTA allows for OS command injection through a local web service call. The high severity and confirmed exploitation in the wild make this an urgent concern.

This vulnerability is actively being exploited in the wild.

Recommended Action

Apply all available security updates for Accellion FTA to address this OS command injection vulnerability. Ensure that your web services are properly secured and restrict access to local web service calls.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2021-27102 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CISA has added CVE-2021-27102 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.

Exploit & PoC Resources

ACTIVE EXPLOITATIONConfirmed exploitation in the wild
External links open in a new tab. Always verify in a controlled environment before use.

All References (1)

Quick Facts

CVE IDCVE-2021-27102
SeverityHIGH
CISA KEVYES — Active Exploitation
ExploitIN THE WILD
EPSS (30d)0.28%
PublishedNov 3, 2021

Recommended Actions

  • Apply vendor patches immediately
  • Monitor CVE-2021-27102 in threat intel feeds
  • Review IDS/IPS signatures for exploitation attempts
  • !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
  • !Active exploitation confirmed — treat as P1
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.