Which products and versions are affected by CVE-2021-27103?

Affected: Fta (Accellion). The full list is in the CVE brief.

Is CVE-2021-27103 being exploited in the wild?

It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Apr 13, 2021 and is known to be used in ransomware campaigns.

Is CVE-2021-27103 in the CISA KEV catalog?

Yes. It was added on Nov 3, 2021 with a federal remediation due date of Nov 17, 2021.

Is there a public exploit for CVE-2021-27103?

Public exploit code is available.

Is there a fix for CVE-2021-27103?

Fixed versions are available, including Fta 9_12_416.

How urgently should CVE-2021-27103 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

Request A Demo

Vulnerability Intelligence

CVE-2021-27103

CriticalExploitedPublic exploit

Accellion FTA 9_12_411 and earlier is affected by SSRF via a crafted POST request to wmProgressstat.html.

Published Feb 16, 2021 · Updated Nov 3, 2025

Key Facts

Patch immediately

CVE-2021-27103 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Fta (Accellion).
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Apr 13, 2021 and is known to be used in ransomware campaigns. Public exploit code is available.
EPSS estimates a 11% probability of exploitation in the next 30 days.
Fixed versions are available, including Fta 9_12_416.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3.1

9.8

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS (30-day exploit likelihood)

11%

Higher than 95.9% of all scored CVEs

Exploited in the wild

Yes

4 catalog listings, used by ransomware

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2021-27103 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

Accellion FTA 9_12_411 and earlier is affected by SSRF via a crafted POST request to wmProgressstat.html. The fixed version is FTA_9_12_416 and later.

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
CISA KEV	Nov 3, 2021	Nov 17, 2021	Known
Industry KEV feed	Apr 13, 2021	Nov 17, 2021	Known
CIRCL KEV	Nov 3, 2021	Nov 17, 2021	Known
ENISA EUVD	Nov 3, 2021	n/a	Not reported

Required action: Apply updates per vendor instructions.

Affected Products

1 affected entries in total

Product	Affected versions	Fixed in
FtaAccellion	See advisory	9_12_416

Patched Releases

Fta

9_12_416

Timeline

Publicly disclosed
Feb 16, 2021
Added to Industry KEV feed
Apr 13, 2021
Added to CISA KEV
Nov 3, 2021
Added to CIRCL KEV
Nov 3, 2021
Added to ENISA EUVD
Nov 3, 2021
Last updated
Nov 3, 2025

Weakness Type

CWE-918 Server-Side Request Forgery (SSRF)

References

8 more references in the full CVE brief

FAQ

Common Questions.

Accellion FTA 9_12_411 and earlier is affected by SSRF via a crafted POST request to wmProgressstat.html.
Affected: Fta (Accellion). The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Apr 13, 2021 and is known to be used in ransomware campaigns.
Yes. It was added on Nov 3, 2021 with a federal remediation due date of Nov 17, 2021.
Public exploit code is available.
Fixed versions are available, including Fta 9_12_416.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

Is CVE-2021-27103 Running On Your Attack Surface?

Brandefense maps vulnerabilities like this one to your internet-facing assets and tells you exactly where to patch.