CVE-2021-37595

CRITICALNVD 9.89.8—

9.8

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_RANGE File Contents Request PDU.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 62.2%
KEV: Not listed

Published

July 30, 2021

Last Modified

November 21, 2024

Advisory Details (2)

Auto-updated May 26, 2026

Upstream fix merged — awaiting tagged release. Sources: github_commit.

generic

Comparing 2.3.2...2.4.0 · FreeRDP/FreeRDP · GitHub

https://github.com/FreeRDP/FreeRDP/compare/2.3.2...2.4.0

github_commit

commit 0d79670a28c0 (FreeRDP/FreeRDP)

Fix landed in FreeRDP/FreeRDP commit 0d79670a28c0 — awaiting tagged release

https://github.com/FreeRDP/FreeRDP/commit/0d79670a28c0ab049af08613621aa0c267f977e9

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-20Improper Input Validation

Data Freshness Timeline

(refreshed 12× in last 7d / 20× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-08 14:15 UTCEPSS rescore
2026-06-08 14:15 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore

Frequently asked(5)

What is CVE-2021-37595?

CVE-2021-37595 is a critical vulnerability published on July 30, 2021. In FreeRDP before 2.4.0 on Windows, wfcliprdrserverfilecontentsrequest in client/Windows/wfcliprdr.c has missing input checks for a FILECONTENTS_RANGE File Contents Request PDU.

When was CVE-2021-37595 disclosed?

CVE-2021-37595 was first published in the National Vulnerability Database on July 30, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-37595 actively exploited?

CVE-2021-37595 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 62.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-37595?

CVE-2021-37595 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2021-37595?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-37595, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2021-37595

📅 Published

🔄 Last Modified

📋 Advisory Details (2)