Cytel Studio <= 9.0 .CY3 File Stack Buffer Overflow
Published Aug 13, 2025
9.3
CRITICALCVSS 4.0
EPSS 0.43%
Description
Cytel Studio version 9.0 and earlier is vulnerable to a stack-based buffer overflow triggered by parsing a malformed .CY3 file. The vulnerability occurs when the application copies user-controlled strings into a fixed-size stack buffer (256 bytes) without proper bounds checking. Exploitation allows arbitrary code execution when the crafted file is opened.
Affected products
-
- Version 0StatusaffectedConstraints<=9.0
- 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 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Cytel Inc. | Cytel Studio | 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:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
1 other source (NVD) ▾
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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
NoTechnical Impact
TotalDecision
n/aAssessed Aug 14, 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 | 0.43% (0.00429) | 34.84th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.40% (0.00400) | 31.59th | v5 (v2026.06.15) |
| Jun 9, 2026 | 10.35% (0.10349) | 93.34th | v4 (v2025.03.14) |
| Jan 9, 2026 | 3.60% (0.03605) | 87.41th | v4 (v2025.03.14) |
| Dec 13, 2025 | 5.43% (0.05428) | 89.82th | v4 (v2025.03.14) |
| Oct 8, 2025 | 4.09% (0.04092) | 88.03th | v4 (v2025.03.14) |
| Aug 14, 2025 | 0.02% (0.00022) | 4.03th | v4 (v2025.03.14) |
References (8)
- http://aluigi.altervista.org/adv/cytel_1-adv.txt technical-descriptionexploit
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/fileformat/cytel_studio_cy3.rb exploit
- https://web.archive.org/web/20110301000000*/http://www.cytel.com/Software/StatXact.aspx product
- https://web.archive.org/web/20110708215826/http://www.cytel.com/Software/LogXact.aspx product
- https://web.archive.org/web/20110708215830/http://www.cytel.com/Software/StatXact.aspx product
- https://www.exploit-db.com/exploits/17930 exploit
- https://www.exploit-db.com/exploits/18027 exploit
- https://www.vulncheck.com/advisories/cytel-studio-cy3-file-stack-buffer-overflow third-party-advisory
Change history (0)
No recorded changes yet.