CVE-2019-8394

Exp

Zoho ManageEngine ServiceDesk Plus (SDP) before 10.0 build 10012 allows remote attackers to upload arbitrary files via login page customization.

Published: 2019-02-17 Last update: 2025-11-07 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2019-8394 is rated Critical Active Threat (86/100): CVSS Medium severity, with high exploitation likelihood (EPSS 87.52%, 99th percentile). CISA KEV confirms active exploitation (added 2021-11-03) affecting Zoho / ManageEngine. a weakness (CWE-434) Unauthenticated remote administrative access may be possible. The CISA remediation deadline has passed—treat as an emergency patch priority.

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

CISA KEV Record for CVE-2019-8394

Name: Zoho ManageEngine ServiceDesk Plus (SDP) File Upload Vulnerability · CISA KEV detail

Exploit added: 2021-11-03

Action due: 2022-05-03

Required action: Apply updates per vendor instructions.

Public exploit references (Exploit-DB) for CVE-2019-8394

EDB-ID Source Kind Published Link
46413 exploit_db edb 2019-02-18 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2019-8394

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 87.28% 87.52% +0.24%
2 2026-01-06 87.21% 87.28% +0.06%
3 2025-12-03 — 87.21% —

Full EPSS history (28 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2019-8394

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 3.6 [email protected]
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 3.6 134c704f-9b21-4f2e-91b3-4a467353bcc0
4.0 2.0 MEDIUM
AV:N/AC:L/Au:S/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.0 2.9 [email protected]

Weakness enumeration for CVE-2019-8394

Affected software / configurations for CVE-2019-8394

Vendor Product Version Raw CPE
zohocorp manageengine_servicedesk_plus < 10.0.0 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:*:*:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus 10.0.0 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:10.0.0:-:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus 10.0.0 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:10.0.0:10000:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus 10.0.0 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:10.0.0:10001:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus 10.0.0 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:10.0.0:10002:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus 10.0.0 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:10.0.0:10003:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus 10.0.0 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:10.0.0:10004:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus 10.0.0 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:10.0.0:10005:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus 10.0.0 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:10.0.0:10006:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus 10.0.0 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:10.0.0:10007:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus 10.0.0 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:10.0.0:10008:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus 10.0.0 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:10.0.0:10009:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus 10.0.0 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:10.0.0:10010:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus 10.0.0 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:10.0.0:10011:*:*:*:*:*:*

References for CVE-2019-8394

cvelogic Threat Intelligence