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Vulnerability record · CVE-2023-30803 · published 10 October 2023

CVE-2023-30803: Sangfor next-gen application firewall authentication bypass by spoofing vulnerability

Sangfor · Next Gen Application Firewall

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.

9.8 CVSS 3.1 Critical EPSS 18% · top 2.9% CWE-290 · Authentication bypass by spoofing
9.8CVSS 3.1 base score
18%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 2 tagged exploit
17 Jun 2026Last modified by NVD

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.

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

Affected products

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

References

LinkTags
https://aws.amazon.com/marketplace/pp/prodview-uujwjffddxzp4 Product
https://labs.watchtowr.com/yet-more-unauth-remote-command-execution-vulns-in-firewalls-sangfor-edition/ ExploitThird Party Advisory
https://vulncheck.com/advisories/sangfor-ngaf-auth-bypass Third Party Advisory
https://aws.amazon.com/marketplace/pp/prodview-uujwjffddxzp4 Product
https://labs.watchtowr.com/yet-more-unauth-remote-command-execution-vulns-in-firewalls-sangfor-edition/ ExploitThird Party Advisory
https://vulncheck.com/advisories/sangfor-ngaf-auth-bypass Third Party Advisory

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Related vulnerabilities

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

9.8CVE-2023-30805Sangfor NGAF unauthenticated OS command injection in login endpointSangfor Next-Gen Application Firewall 8.0.17 mishandles shell metacharacters in the "un" parameter of the /LogInOut.php endpoint, allowing OS command…EPSS 66%analysed9.8CVE-2023-30806Sangfor NGAF unauthenticated OS command injection via PHPSESSID cookieSangfor Next-Gen Application Firewall version NGAF8.0.17 mishandles shell meta-characters in the PHPSESSID cookie, allowing OS command injection. A r…EPSS 66%analysed6.5CVE-2023-30804Sangfor next-gen application firewall information exposure vulnerabilityThe Sangfor Next-Gen Application Firewall version NGAF8.0.17 is vulnerable to an authenticated file disclosure vulnerability. A remote and authentica…EPSS 13%5.3CVE-2023-30802Sangfor next-gen application firewall exposure of resource to wrong sphere vulnerabilityThe Sangfor Next-Gen Application Firewall version NGAF8.0.17 is vulnerable to a source code disclosure vulnerability. A remote and unauthenticated at…EPSS 0.65%6.5CVE-2023-50224TP-Link router httpd authentication bypass exposes stored credentialsThe httpd service on affected TP-Link router firmware contains an improper authentication flaw (CWE-290) that lets a network-adjacent attacker bypass…KEVEPSS 16%analysed10.0CVE-2024-54085AMI MegaRAC SPx BMC authentication bypass via Redfish Host InterfaceAMI's SPx BMC implementation contains an authentication bypass reachable remotely through the Redfish Host Interface, classified as CWE-290 (authenti…KEVEPSS 61%analysed9.8CVE-2024-4358Progress Telerik Report Server authentication bypass via spoofingTelerik Report Server 2024 Q1 (10.0.24.305) and earlier on IIS contains an authentication bypass by spoofing (CWE-290). An unauthenticated remote att…KEVEPSS 97%analysed9.8CVE-2022-24112Apache APISIX batch-requests plugin auth bypass enables RCEThe batch-requests plugin in Apache APISIX can be abused to bypass the Admin API IP restriction because a code bug defeats the check that overrides t…KEVEPSS 96%analysed

Source: NIST National Vulnerability Database (record CVE-2023-30803), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.