Vulnerability · Published Dec 30, 2025 · Assigned by VulnCheck
CVE-2022-50800H3C SSL VPN n/a Username Enumeration via Login Script Credential Verification
High 7.5
In plain English
A high-severity security flaw in H3C SSL VPN from Hangzhou H3C Technologies. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 31% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.4%top 69.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
H3C SSL VPN contains a user enumeration vulnerability that allows attackers to identify valid usernames through the 'txtUsrName' POST parameter. Attackers can submit different usernames to the login_submit.cgi endpoint and analyze response messages to distinguish between existing and non-existing accounts.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Hangzhou H3C Technologies | H3C SSL VPN | 1.1 |
Weakness: CWE-203 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
References
- ExploitDB-50742 exploit
- H3C Official Product Homepage product
- Zero Science Lab Disclosure (ZSL-2022-5697) third-party-advisory
- VulnCheck Advisory: H3C SSL VPN n/a Username Enumeration via Login Script Credential Verification third-party-advisory