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Vulnerability record · CVE-2021-41530 · published 4 October 2021

CVE-2021-41530: Forcepoint next generation firewall vulnerability

Forcepoint · Next Generation Firewall

Forcepoint NGFW Engine versions 6.5.11 and earlier, 6.8.6 and earlier, and 6.10.0 are vulnerable to TCP reflected amplification vulnerability, if HTTP User Response has been configured.

7.5 CVSS 3.1 High EPSS 0.93% · top 40.8%
7.5CVSS 3.1 base score, v2 4.3
0.93%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Forcepoint NGFW Engine versions 6.5.11 and earlier, 6.8.6 and earlier, and 6.10.0 are vulnerable to TCP reflected amplification vulnerability, if HTTP User Response has been configured.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://help.forcepoint.com/security/CVE/CVE-2021-41530.html MitigationVendor Advisory
https://help.forcepoint.com/security/CVE/CVE-2021-41530.html MitigationVendor Advisory

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Related vulnerabilities

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

9.1CVE-2019-6143Forcepoint next generation firewall improper authentication vulnerabilityForcepoint Next Generation Firewall (Forcepoint NGFW) 6.4.x before 6.4.7, 6.5.x before 6.5.4, and 6.6.x before 6.6.2 has a serious authentication vul…EPSS 1.1%7.3CVE-2025-12690Forcepoint next generation firewall execution with unnecessary privileges vulnerabilityExecution with unnecessary privileges in Forcepoint NGFW Engine allows local privilege escalation.This issue affects NGFW Engine through 6.10.19, thr…EPSS 0.12%

Source: NIST National Vulnerability Database (record CVE-2021-41530), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.