CISA KEV · Known exploitedCritical

CVE-2021-27103

Accellion FTA

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.

CVSS
9.8
EPSS
11.3%
95.5% percentile
CISA KEV
Listed
Published
2021.02.17
PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV
Exploit probability11.3%
Technical severityCVSS 9.8

Vulnerability overview

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.

Affected product and versions

Product
Accellion FTA
Affected versions
< 9_12_416
Fixed versions
9_12_416

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
CISA required action

Apply updates per vendor instructions.

Due date: 2021.11.17
  1. 1
    Identify

    Confirm that Accellion FTA and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-918
KEV added
2021.11.03
Ransomware use
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CVE-2021-27103 — Accellion FTA | SECUFOCUS NOW