CVE-2023-30803

Name: CVE-2023-30803
Creator: NVD / NIST
Published: 2023-10-10T15:15:09.957+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 18.21%

Last modified Jun 17, 2026

CVE-2023-30803 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 18.21% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

18.21%

96.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Sangfor	Next-Gen Application Firewall	8.0.17

References

https://aws.amazon.com/marketplace/pp/prodview-uujwjffddxzp4Product
https://labs.watchtowr.com/yet-more-unauth-remote-command-execution-vulns-in-firewalls-sangfor-edition/Exploit, Third Party Advisory
https://vulncheck.com/advisories/sangfor-ngaf-auth-bypassThird Party Advisory
https://aws.amazon.com/marketplace/pp/prodview-uujwjffddxzp4Product
https://labs.watchtowr.com/yet-more-unauth-remote-command-execution-vulns-in-firewalls-sangfor-edition/Exploit, Third Party Advisory
https://vulncheck.com/advisories/sangfor-ngaf-auth-bypassThird Party Advisory

Timeline

Published: Oct 10, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-30803?

How severe is CVE-2023-30803?

CVE-2023-30803 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 18.21% probability of exploitation in the next 30 days.

How do I fix CVE-2023-30803?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-30803?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST