FTP Navigator 8.03 - 'Custom Command' Denial of Service (SEH)
Published Feb 12, 2026
6.7
MEDIUMCVSS 4.0
EPSS 0.46%
Description
FTP Navigator 8.03 contains a denial of service vulnerability that allows attackers to crash the application by overwriting Structured Exception Handler (SEH) with malicious input. Attackers can generate a payload of 4108 'A' characters followed by 4 'B' characters and 40 'C' characters to trigger a program crash when pasted into the custom command input.
Affected products
-
- Version 8.03StatusaffectedConstraints-
- 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 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Internet-Soft | FTP Navigator | n/a |
|
- ≤ 8.03
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:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
1 other source (NVD) ▾
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/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
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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
PartialDecision
n/aAssessed Feb 13, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
Feb–Oct 2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (3 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 0.46% (0.00455) | 37.32th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.43% (0.00429) | 34.01th | v5 (v2026.06.15) |
| Feb 13, 2026 | 0.03% (0.00028) | 7.36th | v4 (v2025.03.14) |
References (3)
- http://www.internet-soft.com/ product
- https://www.exploit-db.com/exploits/47794 exploitVDB Entry
- https://www.vulncheck.com/advisories/ftp-navigator-custom-command-denial-of-service-seh third-party-advisoryThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.internet-soft.com/ | product | |
| https://www.exploit-db.com/exploits/47794 | exploitVDB Entry | |
| https://www.vulncheck.com/advisories/ftp-navigator-custom-command-denial-of-service-seh | third-party-advisoryThird Party Advisory |
Change history (0)
No recorded changes yet.