Kaseya Virtual System Administrator (VSA) 7.x before 7.0.0.33, 8.x before 8.0.0.23, 9.0 before 9.0.0.19, and 9.1 before 9.1.0.9 does not properly require authentication, which allows remote attackers to bypass authentication and (1) add an administrative account via crafted request to LocalAuth/setAccount.aspx or (2) write to and execute arbitrary files via a full pathname in the PathData parameter to ConfigTab/uploader.aspx
Published Feb 17, 2020
9.8
CRITICALCVSS 3.1
EPSS 82.10%
Description
Kaseya Virtual System Administrator (VSA) 7.x before 7.0.0.33, 8.x before 8.0.0.23, 9.0 before 9.0.0.19, and 9.1 before 9.1.0.9 does not properly require authentication, which allows remote attackers to bypass authentication and (1) add an administrative account via crafted request to LocalAuth/setAccount.aspx or (2) write to and execute arbitrary files via a full pathname in the PathData parameter to ConfigTab/uploader.aspx.
Affected products
No data.
- ≥ 7.0.0.0 · < 7.0.0.33
- ≥ 8.0.0.0 · < 8.0.0.23
- ≥ 9.0.0.0 · < 9.0.0.19
- ≥ 9.1.0.0 · < 9.1.0.9
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (21 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 82.10% (0.82102) | 99.64th | v5 (v2026.06.15) |
| Jun 15, 2026 | 82.10% (0.82102) | 99.61th | v5 (v2026.06.15) |
| Nov 28, 2025 | 77.80% (0.77795) | 98.94th | v4 (v2025.03.14) |
| Mar 30, 2025 | 76.72% (0.76716) | 98.89th | v4 (v2025.03.14) |
| Mar 29, 2025 | 80.82% (0.80819) | 98.90th | v4 (v2025.03.14) |
| Mar 17, 2025 | 76.72% (0.76716) | 98.90th | v4 (v2025.03.14) |
| Feb 28, 2025 | 95.46% (0.95456) | 99.56th | v3 (v2023.03.01) |
| Dec 12, 2024 | 93.99% (0.93988) | 99.26th | v3 (v2023.03.01) |
| Aug 15, 2024 | 93.72% (0.93716) | 99.17th | v3 (v2023.03.01) |
| Jul 15, 2024 | 94.88% (0.94882) | 99.30th | v3 (v2023.03.01) |
| Jun 12, 2024 | 94.91% (0.94906) | 99.30th | v3 (v2023.03.01) |
| Apr 28, 2024 | 95.16% (0.95162) | 99.30th | v3 (v2023.03.01) |
| Feb 24, 2024 | 95.74% (0.95741) | 99.37th | v3 (v2023.03.01) |
| Jan 24, 2024 | 95.35% (0.95354) | 99.21th | v3 (v2023.03.01) |
| Nov 19, 2023 | 95.55% (0.95548) | 99.21th | v3 (v2023.03.01) |
| Nov 4, 2023 | 95.47% (0.95469) | 99.17th | v3 (v2023.03.01) |
| Aug 9, 2023 | 95.30% (0.95297) | 99.05th | v3 (v2023.03.01) |
| May 21, 2023 | 94.97% (0.94967) | 98.90th | v3 (v2023.03.01) |
| Mar 7, 2023 | 94.94% (0.94940) | 98.79th | v3 (v2023.03.01) |
| Mar 6, 2023 | 80.75% (0.80749) | 99.52th | v2 (v2022.01.01) |
| Feb 4, 2022 | 80.75% (0.80749) | 99.43th | v2 (v2022.01.01) |
References (5)
- http://packetstormsecurity.com/files/133782/Kaseya-Virtual-System-Administrator-Code-Execution-Privilege-Escalation.html x_refsource_MISCExploitThird Party AdvisoryVDB Entry
- http://www.zerodayinitiative.com/advisories/ZDI-15-448 x_refsource_MISCThird Party AdvisoryVDB Entry
- http://www.zerodayinitiative.com/advisories/ZDI-15-449 x_refsource_MISCThird Party AdvisoryVDB Entry
- https://helpdesk.kaseya.com/entries/96164487--Kaseya-Security-Advisory x_refsource_MISCBroken LinkVendor Advisory
- https://www.exploit-db.com/exploits/38351/ x_refsource_MISCExploitThird Party AdvisoryVDB Entry
| Link | Providers | Tags |
|---|---|---|
| http://packetstormsecurity.com/files/133782/Kaseya-Virtual-System-Administrator-Code-Execution-Privilege-Escalation.html | x_refsource_MISCExploitThird Party AdvisoryVDB Entry | |
| http://www.zerodayinitiative.com/advisories/ZDI-15-448 | x_refsource_MISCThird Party AdvisoryVDB Entry | |
| http://www.zerodayinitiative.com/advisories/ZDI-15-449 | x_refsource_MISCThird Party AdvisoryVDB Entry | |
| https://helpdesk.kaseya.com/entries/96164487--Kaseya-Security-Advisory | x_refsource_MISCBroken LinkVendor Advisory | |
| https://www.exploit-db.com/exploits/38351/ | x_refsource_MISCExploitThird Party AdvisoryVDB Entry |
Change history (0)
No recorded changes yet.