What is CVE-2021-27730?

CVE-2021-27730 is a critical-severity vulnerability in Accellion Fta, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 9.8/10. Published 2021-03-02.

How severe is CVE-2021-27730?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2021-27730 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Accellion Fta

CVE-2021-27730

Accellion FTA 9_12_432 and earlier is affected by argument injection via a crafted POST request to an admin endpoint. The fixed version is FTA_9_12_444 and later.

EPSS: 0.014 (69.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Accellion Fta
N/a — versions n/a

Weakness classification (CWE)

CWE-74 — Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection)

Public proof-of-concept exploits

accellion/CVEs

References

cve@mitre.org (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-27730?: CVE-2021-27730 is a critical-severity vulnerability in Accellion Fta, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 9.8/10. Published 2021-03-02.
How severe is CVE-2021-27730?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2021-27730 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.