CVE-2021-27101 (GCVE-0-2021-27101)

Vulnerability from cvelistv5 – Published: 2021-02-16 20:02 – Updated: 2025-10-21 23:35
VLAI CISA Previdian
Summary
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.
SSVC
Exploitation: active Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-05-27 17:54 UTC
Assigner
mitre CNA under the mitre root
CNA scorecard E 27/100 over 2350 records in the last 180 days details
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant

Vulnerability ID: CVE-2021-27101

Status: Confirmed

Status Updated: 2021-11-03 00:00 UTC

Exploited: Yes


Timestamps
First Seen: 2021-11-03
Asserted: 2021-11-03

Scope
Notes: KEV entry: Accellion FTA SQL Injection Vulnerability | Affected: Accellion / FTA | Description: 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. | Due date: 2021-11-17 | Known ransomware campaign use (KEV): Known | Notes (KEV): https://nvd.nist.gov/vuln/detail/CVE-2021-27101

Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev


Details
Cwes CWE-89 CWE-138
Feed CISA Known Exploited Vulnerabilities Catalog
Product FTA
Due Date 2021-11-17
Date Added 2021-11-03
Vendorproject Accellion
Vulnerabilityname Accellion FTA SQL Injection Vulnerability
Knownransomwarecampaignuse Known

References

Created: 2026-02-02 12:28 UTC | Updated: 2026-02-06 07:17 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant

Vulnerability ID: CVE-2021-27101

Status: Confirmed

Status Updated: 2021-11-03 00:00 UTC

Exploited: Yes


Timestamps
First Seen: 2021-11-03
Asserted: 2021-11-03

Scope
Notes: KEVIntel entry: 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... | Affected: Accellion / FTA | CVSS: 9.8 (CRITICAL) | EPSS: 0.05998 | Used in malware: yes | Not yet in CISA KEV: False

Evidence

Type: Public Report

Signal: Confirmed Compromise

Confidence: 70%

Source: kevintel


Details
Feed KEVIntel (kevintel.com)
Title 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...
Vendor Accellion
Product FTA
Added Date 2021-11-03T00:00:00.000Z
Cvss Score 9.8
Epss Score 0.05998
Cvss Severity CRITICAL
Epss Percentile 0.92386
Used In Malware yes
Ahead Of Cisa Kev None
Not Yet In Cisa Kev False

References

Created: 2026-06-23 14:04 UTC | Updated: 2026-07-10 06:14 UTC
Show details on NVD website

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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