CVE-2023-30803 in the critical feed json
Sangfor Next-Gen Application Firewall Authentication Bypass
published 2023-10-10 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-35163
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 20.9%
- EPSS 20.9% chance of exploitation in 30 days, percentile 97%
- public exploits
- 0
- none known
Summary
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.
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- total
- Assessed
- 2 y ago
Exploit prediction
20.89% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- labs.watchtowr.com https://labs.watchtowr.com/yet-more-unauth-remote-command-execution-vulns-in-firewalls-sangfor-edition/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Sangfor Net-Gen Application Firewall
Classification
- Weakness
-
- CWE-290 Authentication Bypass by Spoofing
References
-
labs.watchtowr.com
/yet-more-unauth-remote-command-execution-vulns-in-firewalls-sangfor-edition/
third-party-advisory, exploit, technical-description
-
vulncheck.com
/advisories/sangfor-ngaf-auth-bypass
third-party-advisory
-
aws.amazon.com
/marketplace/pp/prodview-uujwjffddxzp4
product
Sources
- CVE List CVE-2023-30803
- NVD CVE-2023-30803
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