Belkin Bulldog Plus Web Service Buffer Overflow
Published Aug 30, 2025
9.3
CRITICALCVSS 4.0
EPSS 1.26%
Description
Belkin Bulldog Plus version 4.0.2 build 1219 contains a stack-based buffer overflow vulnerability in its web service authentication handler. When a specially crafted HTTP request is sent with an oversized Authorization header, the application fails to properly validate the input length before copying it into a fixed-size buffer, resulting in memory corruption and potential remote code execution. Exploitation requires network access and does not require prior authentication.
Affected products
-
- Version 0StatusaffectedConstraints<=4.0.2 build 1219
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Belkin International, Inc. | Bulldog Plus UPS Monitoring Software | unaffected |
|
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
1 other source (NVD) ▾
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
PoCAutomatable
YesTechnical Impact
TotalDecision
n/aAssessed Sep 2, 2025 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2025–2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (7 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.26% (0.01262) | 68.58th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.53% (0.01532) | 71.41th | v5 (v2026.06.15) |
| Jan 27, 2026 | 62.60% (0.62604) | 98.32th | v4 (v2025.03.14) |
| Jan 26, 2026 | 56.70% (0.56704) | 98.05th | v4 (v2025.03.14) |
| Dec 30, 2025 | 70.36% (0.70364) | 98.63th | v4 (v2025.03.14) |
| Oct 8, 2025 | 65.91% (0.65911) | 98.42th | v4 (v2025.03.14) |
| Aug 31, 2025 | 0.41% (0.00415) | 60.78th | v4 (v2025.03.14) |
References (5)
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/http/belkin_bulldog.rb exploit
- https://s3.belkin.com/support/dl/bulldogwindows.pdf product
- https://www.exploit-db.com/exploits/8173 exploit
- https://www.fortiguard.com/encyclopedia/ips/17325/belkin-bulldog-plus-web-services-buffer-overflow third-party-advisory
- https://www.vulncheck.com/advisories/belkin-bulldog-plus-web-service-buffer-overflow third-party-advisory
Change history (0)
No recorded changes yet.