BullWall Server Intrusion Protection RDP MFA connection delay

published 2025-12-18 10 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-204321

cvss: 7.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 27%
public exploits: 0; none known

BullWall Server Intrusion Protection has a noticeable configuration-dependent delay before the MFA check for RDP connections. A remote, authenticated attacker can potentially bypass detection during this delay. Versions 4.6.0.0, 4.6.0.6, 4.6.0.7, and 4.6.1.4 are affected. Other versions may also be affected.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa vex VA-25-352-01 updated 2025-12-18 cvss 7.5

BullWall Ransomware Containment and Server Intrusion Protection multiple vulnerabilities

BullWall Server Intrusion Protection >4.6.0.0
affected: no fix available “No fix available.”

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 10 mo ago (2025-12-18)

Exploit prediction

0.34% chance of exploitation in the next 30 days, higher than 27% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.5	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA	4.0	7.7	CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CNA	4.0	7.7	CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

BullWall Server Intrusion Protection

Classification

Weakness

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

References

raw.githubusercontent.com /cisagov/CSAF/develop/csaf_files/IT/white/2025/va-25-352-01.json
government-resource, third-party-advisory, broken-link
cve.org /CVERecord?id=CVE-2025-62003
vdb-entry, third-party-advisory

Sources

CVE List CVE-2025-62003
NVD CVE-2025-62003

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary