Auth bypass in Kaseya Virtual System Administrator
CVE-2015-6922
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.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.821 (99.7th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.821 · newest: 0.821 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.zerodayinitiative.com/advisories/ZDI-15-448 (VDB Entry, Third Party Advisory)
- packetstormsecurity.com/files/133782/Kaseya-Virtual-System-Administrator-Code-E… (Exploit, VDB Entry, Third Party Advisory)
- www.zerodayinitiative.com/advisories/ZDI-15-449 (VDB Entry, Third Party Advisory)
- www.exploit-db.com/exploits/38351/ (Exploit, VDB Entry, Third Party Advisory)
- helpdesk.kaseya.com/entries/96164487--Kaseya-Security-Advisory (Broken Link, Vendor Advisory)
Frequently asked questions
- What is CVE-2015-6922?
- CVE-2015-6922 is a critical-severity vulnerability in Kaseya Virtual System Administrator, classified under Improper Authentication. CVSS score: 9.8/10. Published 2020-02-17.
- How severe is CVE-2015-6922?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2015-6922 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.