CVE-2025-62004

Authenticated MFA bypass via startup service ordering

Published Dec 18, 2025 · Updated Dec 18, 2025

Authentication bypass in BullWall Server Intrusion Protection allows local users to establish sessions before MFA enforcement starts. During system startup, login services accept a session before SIP services initialize, and SIP neither applies MFA retroactively nor disconnects that session. The gate is authenticated access during the short, environment-dependent startup window; the resulting session remains active without SIP MFA.

CVSS severity7.7
High
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in BullWall Server Intrusion Protection allows local users to establish sessions before MFA enforcement starts. During system startup, login services accept a session before SIP services initialize, and SIP neither applies MFA retroactively nor disconnects that session. The gate is authenticated access during the short, environment-dependent startup window; the resulting session remains active without SIP MFA.

The record

CVE
CVE-2025-62004
Published
Dec 18, 2025
Updated
Dec 18, 2025
Vendor
BullWall
Product
Server Intrusion Protection
Classifications
CWE-367, T1078
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 18, 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=4.6.0.0 <*

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

BullWall · Server Intrusion Protectionversion=4.6.0.0 <*

Published CVSS scores

7.5Cybersecurity and Infrastructure Security Agency (CISA) U.S. Civilian GovernmentCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
7.7Cybersecurity and Infrastructure Security Agency (CISA) U.S. Civilian GovernmentCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-367Time-of-check Time-of-use (TOCTOU) Race Condition
T1078Valid Accounts

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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