What is CVE-2021-31703?

CVE-2021-31703 is a critical-severity vulnerability in Frontiersoftware Ichris, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2021-05-29.

How severe is CVE-2021-31703?

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

Is CVE-2021-31703 known to be exploited?

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

Arbitrary file upload in Frontiersoftware Ichris

CVE-2021-31703

Frontier ichris through 5.18 allows users to upload malicious executable files that might later be downloaded and run by any client user.

Vulnerability class: Unrestricted File Upload

EPSS: 0.012 (66.3th 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

Frontiersoftware Ichris
N/a — versions n/a

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

Public proof-of-concept exploits

References

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

Frequently asked questions

What is CVE-2021-31703?: CVE-2021-31703 is a critical-severity vulnerability in Frontiersoftware Ichris, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2021-05-29.
How severe is CVE-2021-31703?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2021-31703 known to be exploited?: 9 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.