CVE-2023-30803 — The Sangfor Next-Gen Application Firewall version NGAF8

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 h

01What is this vulnerability?

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.

02Affected products

Vendor	Product	Versions
Sangfor	Net	Gen Application Firewall — 8.0.17

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-10-10T14:14:04.657Z
• Last modified: 2025-11-28T15:58:38.195Z

09References

• labs.watchtowr.com — https://labs.watchtowr.com/yet-more-unauth-remote-command-execution-vulns-in-fir…
• vulncheck.com — https://vulncheck.com/advisories/sangfor-ngaf-auth-bypass
• aws.amazon.com — https://aws.amazon.com/marketplace/pp/prodview-uujwjffddxzp4