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Vulnerability record · CVE-2021-4465 · published 14 November 2025

CVE-2021-4465: Uncontrolled resource consumption vulnerability

ReQuest Serious Play F3 Media Server versions 7.0.3.4968 (Pro), 7.0.2.4954, 6.5.2.4954, 6.4.2.4681, 6.3.2.4203, and 2.0.1.823 contain a remote denial-of-service vulnerability. The device can be shut down or rebooted by an unauthenticated attacker through a single crafted HTTP GET request, allowing remote interruption of service availability.

8.7 CVSS 4.0 High EPSS 0.46% · top 62.2% CWE-400 · Uncontrolled resource consumption Deferred
8.7CVSS 4.0 base score
0.46%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
10References
17 Jun 2026Last modified by NVD

Description

ReQuest Serious Play F3 Media Server versions 7.0.3.4968 (Pro), 7.0.2.4954, 6.5.2.4954, 6.4.2.4681, 6.3.2.4203, and 2.0.1.823 contain a remote denial-of-service vulnerability. The device can be shut down or rebooted by an unauthenticated attacker through a single crafted HTTP GET request, allowing remote interruption of service availability.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
http://www.request.com/
https://cxsecurity.com/issue/WLB-2020100122
https://exchange.xforce.ibmcloud.com/vulnerabilities/190031
https://packetstorm.news/files/id/159602
https://www.exploit-db.com/exploits/48951
https://www.vulncheck.com/advisories/request-serious-play-f3-media-server-remote-dos
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2020-5601.php
https://cxsecurity.com/issue/WLB-2020100122
https://www.exploit-db.com/exploits/48951
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2020-5601.php

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-4465), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.