CVE-2022-50800Public exploitNetwork attack vector

Username enumeration via distinct login responses

Published Dec 30, 2025 · Updated Dec 30, 2025

User enumeration in New H3C Technologies H3C SSL VPN 1.1 allows remote attackers to identify valid accounts through the login form. The /svpn/vpnuser/login_submit.cgi handler accepts an attacker-controlled txtUsrName value and returns distinct messages for nonexistent, valid, and inactive users. Unauthenticated network access to the SSL VPN login endpoint is sufficient, and the disclosed result is limited to account validity.

CVSS severity6.9
Medium
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

User enumeration in New H3C Technologies H3C SSL VPN 1.1 allows remote attackers to identify valid accounts through the login form. The /svpn/vpnuser/login_submit.cgi handler accepts an attacker-controlled txtUsrName value and returns distinct messages for nonexistent, valid, and inactive users. Unauthenticated network access to the SSL VPN login endpoint is sufficient, and the disclosed result is limited to account validity.

The record

CVE
CVE-2022-50800
Published
Dec 30, 2025
Updated
Dec 30, 2025
Vendor
New H3C Technologies Co., Ltd.
Product
H3C SSL VPN
Classifications
CWE-203, T1087
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 30, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

New H3C Technologies Co., Ltd. · H3C SSL VPNversion=1.1

Published CVSS scores

6.9VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
7.5VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-203Observable Discrepancy
T1087Account Discovery

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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