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

Published · last modified .

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.

EPSS exploit prediction

EPSS: 0.012 (67.9th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 67.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2021-31703: held from 0.012 to 0.012.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

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.