What is CVE-2021-37594?

CVE-2021-37594 is a critical-severity vulnerability in Freerdp, classified under Improper Input Validation. CVSS score: 9.8/10. Published 2021-07-30.

How severe is CVE-2021-37594?

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

Is CVE-2021-37594 known to be exploited?

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

Improper input validation in Freerdp

CVE-2021-37594

In FreeRDP before 2.4.0 on Windows, wf_cliprdr_server_file_contents_request in client/Windows/wf_cliprdr.c has missing input checks for a FILECONTENTS_SIZE File Contents Request PDU.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.014 (69.9th 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

Freerdp
Microsoft Windows
N/a — versions n/a

Weakness classification (CWE)

CWE-20 — Improper Input Validation

Public proof-of-concept exploits

References

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

Frequently asked questions

What is CVE-2021-37594?: CVE-2021-37594 is a critical-severity vulnerability in Freerdp, classified under Improper Input Validation. CVSS score: 9.8/10. Published 2021-07-30.
How severe is CVE-2021-37594?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2021-37594 known to be exploited?: 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.