CVE-2021-31159

Exp

Zoho ManageEngine ServiceDesk Plus MSP before 10519 is vulnerable to a User Enumeration bug due to improper error-message generation in the Forgot Password functionality, aka SDPMSP-15732.

Published: 2021-06-16 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-31159 is rated High Exploit Risk (65.1/100): CVSS Medium severity, with high exploitation likelihood (EPSS 17.77%, 97th percentile). 3 public exploit reference(s) are indexed (Exploit-DB). 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-2021-31159

EDB-ID Source Kind Published Link
50027 exploit_db edb 2021-06-17 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2021-31159

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 2026-06-15 24.29% 17.77% -6.52%
2 2026-05-07 21.95% 24.29% +2.34%
3 2026-03-16 — 21.95% —

Full EPSS history (36 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-31159

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 1.4 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/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:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2021-31159

Affected software / configurations for CVE-2021-31159

Vendor Product Version Raw CPE
zohocorp manageengine_servicedesk_plus_msp >= 8.0, <= 9.4 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:*:*:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10500:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10501:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10502:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10503:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10504:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10505:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10506:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10507:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10508:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10509:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10510:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10511:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10512:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10513:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10514:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10515:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10516:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10517:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10518:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:8000:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:8001:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:8002:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:8003:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:8004:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:8100:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:8101:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:8102:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:8103:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:8104:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:8105:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:8200:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:8201:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:8202:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:8203:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:8204:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:8205:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:8206:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:8207:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:8208:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:8209:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:8210:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:8211:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:8300:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:8301:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:8302:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:8303:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:8304:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:8305:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:8306:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:8307:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:8308:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:8309:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:8310:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:8311:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:8312:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:9000:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:9001:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:9002:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:9003:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:9004:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:9005:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:9006:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:9007:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:9008:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:9009:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:9201:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:9203:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:9204:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:9205:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:9206:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:9207:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:9208:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:9209:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:9210:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:9300:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:9301:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:9302:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:9303:*:*:*:*:*:*
zohocorp manageengine_servicedesk_plus_msp 10.5 cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:9304:*:*:*:*:*:*

References for CVE-2021-31159

cvelogic Threat Intelligence