CVE-2023-30803
The Sangfor Next-Gen Application Firewall version NGAF8.0.17 is vulnerable to an authentication bypass vulnerability.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 20.9%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
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
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 20.89% probability · 98th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-290
- Affected
- sangfor/next-gen application firewall
- Source
- disclosure@vulncheck.com
EPSS moved from 20.9% on 11 October 2026 to 20.9% on 3 November 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.