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CVE-2023-30803

32
FAUCET Score

CVE-2023-30803 is a critical authentication bypass vulnerability affecting Sangfor Next-Gen Application Firewall (NGAF) version 8.0.17. A remote, unauthenticated attacker can gain administrative access by manipulating the Y-forwarded-for HTTP header. With a CVSS score of 9.8, this vulnerability poses a severe risk of full compromise (confidentiality, integrity, and availability). Currently, there is no public exploit code, active exploitation, or significant community discussion reported for this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
8.0.17CPE matchmatch criteria
cpe:2.3:a:sangfor:next-gen_application_firewall:8.0.17:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
18.21%
Probability of exploitation in next 30 days
EPSS Percentile
96.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.1821 is in the 93rd percentile among its peer group of 36,897 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

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