CVE-2023-30803 - CVE House

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Status published Critical CVE-2023-30803

Sangfor Next-Gen Application Firewall Authentication Bypass

9.8 CVSS

Vulnerability Description

The Sangfor Next-Gen Application Firewall version NGAF8.0.17 is vulnerable to an authentication bypass vulnerability. A remote and unauthenticated attacker can bypass authentication and access administrative functionality by sending HTTP requests using a crafted Y-forwarded-for header.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

watchTowr Labs
watchTowr Labs

References

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Affected Vendor

Sangfor

View all reports →

Affected Software

Net-Gen Application Firewall

Vulnerable Versions:

8.0.17

Timeline

Official Publish: October 10th, 2023

Last Modified: November 28th, 2025

Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

MITRE ATT&CK TTPs

T1557 Adversary-in-the-Middle

T1078 Valid Accounts

T1550 Use Alternate Authentication Material

Defense Evasion

T1021 Remote Services

Lateral Movement

T1190 Exploit Public-Facing Application