CVE-2021-27103

Name: CVE-2021-27103
Creator: NVD / NIST
Published: 2021-02-16T21:15:13.217+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10Actively ExploitedEPSS 11.41%

Last modified Jun 17, 2026

CVE-2021-27103 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. CISA has confirmed active exploitation in the wild. EPSS estimates a 11.41% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

11.41%

95.4th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Nov 17, 2021.

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Accellion	Fta	< 9_12_416

References

https://github.com/accellion/CVEs/blob/main/CVE-2021-27103.txtBroken Link, Product
https://www.accellion.com/products/fta/Product
https://github.com/accellion/CVEs/blob/main/CVE-2021-27103.txtBroken Link, Product
https://www.accellion.com/products/fta/Product
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27103US Government Resource

Timeline

Published: Feb 16, 2021
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2021-27103?

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.

How severe is CVE-2021-27103?

CVE-2021-27103 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 11.41% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2021-27103?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-27103?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST