CVE-2015-2863

Exp

Open redirect vulnerability in Kaseya Virtual System Administrator (VSA) 7.x before 7.0.0.29, 8.x before 8.0.0.18, 9.0 before 9.0.0.14, and 9.1 before 9.1.0.4 allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via unspecified vectors.

Published: 2015-07-20 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-2863 is rated High Exploit Risk (69/100): CVSS Medium severity, with high exploitation likelihood (EPSS 49.04%, 98th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +2.57% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2015-2863

EDB-ID Source Kind Published Link
37621 exploit_db edb 2015-07-15 Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2015-2863

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-03-17 46.46% 49.04% +2.57%
2 2026-03-04 44.82% 46.46% +1.64%
3 2026-03-01 — 44.82% —

Full EPSS history (43 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-2863

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2015-2863

NVD evaluator notes for CVE-2015-2863

Comment: <a href="http://cwe.mitre.org/data/definitions/601.html" rel="nofollow">CWE-601: URL Redirection to Untrusted Site ('Open Redirect')</a>

Affected software / configurations for CVE-2015-2863

Vendor Product Version Raw CPE
kaseya virtual_system_administrator >= 7.0, < 7.0.0.29 cpe:2.3:a:kaseya:virtual_system_administrator:*:*:*:*:*:*:*:*
kaseya virtual_system_administrator >= 8.0, < 8.0.0.18 cpe:2.3:a:kaseya:virtual_system_administrator:*:*:*:*:*:*:*:*
kaseya virtual_system_administrator >= 9.0, < 9.0.0.14 cpe:2.3:a:kaseya:virtual_system_administrator:*:*:*:*:*:*:*:*
kaseya virtual_system_administrator >= 9.1, < 9.1.0.4 cpe:2.3:a:kaseya:virtual_system_administrator:*:*:*:*:*:*:*:*

References for CVE-2015-2863

URL Tags
http://www.kb.cert.org/vuls/id/919604 Third Party Advisory US Government Resource
cvelogic Threat Intelligence