CVE-2021-27101

CRITICAL
9.8
CVSS Score
Published: February 16, 2021 at 08:02 PM UTC
Updated: June 17, 2026 at 03:44 AM UTC
1 product affected across 1 vendorFta

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Severity
CRITICAL9.8
Exploitation
CISA KEV
Exploit prediction
EPSS 6%
SSVC
Active

Actively Exploited

CISA Known Exploited Vulnerabilities (KEV) Catalog

EPSS Score6.0%

EPSS (Exploit Prediction Scoring System) estimates a 6.0% chance this CVE is exploited in the wild within the next 30 days — higher than 93% of all CVEs. It complements CVSS: a high EPSS on a mid-severity CVE can still be urgent.

Accellion FTA contains a SQL injection vulnerability exploited via a crafted host header in a request to document_root.html.

Required Action
Apply updates per vendor instructions.
Ransomware Use
Known
Added to KEV
Nov 3, 2021
Remediation Due
Nov 17, 2021
1804 days overdue

Description

Accellion FTA 9_12_370 and earlier is affected by SQL injection via a crafted Host header in a request to document_root.html. The fixed version is FTA_9_12_380 and later.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 9_12_370

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

x_refsource_MISCBroken LinkThird Party Advisory
https://github.com/accellion/CVEs/blob/main/CVE-2021-27101.txt
x_refsource_MISCProductVendor Advisory
https://www.accellion.com/products/fta/
US Government Resource
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27101

SSVC — Action Prioritization

SSVCActiveNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

9.8CRITICALCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
NVD-CWE-Other

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