CVE-2020-28653

Exp

Zoho ManageEngine OpManager Stable build before 125203 (and Released build before 125233) allows Remote Code Execution via the Smart Update Manager (SUM) servlet.

Published: 2021-02-03 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-28653 is rated High Exploit Risk (89.3/100): CVSS Critical severity, with high exploitation likelihood (EPSS 93.00%, 100th percentile). 1 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-2020-28653

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2020-28653

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 2026-04-02 92.82% 93.00% +0.17%
2 2026-03-05 88.71% 92.82% +4.11%
3 2025-12-02 — 88.71% —

Full EPSS history (41 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-28653

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H 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:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P 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:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2020-28653

Affected software / configurations for CVE-2020-28653

Vendor Product Version Raw CPE
zohocorp manageengine_opmanager < 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:*:*:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125000:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125002:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125100:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125101:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125102:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125108:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125110:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125111:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125112:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125113:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125114:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125116:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125117:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125118:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125120:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125121:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125123:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125124:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125125:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125136:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125137:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125139:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125140:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125143:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125144:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125145:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125156:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125157:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125158:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125159:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125161:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125163:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125174:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125175:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125176:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125177:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125178:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125180:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125181:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125192:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125193:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125194:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125195:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125196:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125197:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125198:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125201:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125204:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125212:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125213:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125214:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125215:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125216:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125228:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125229:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125230:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125231:*:*:*:*:*:*
zohocorp manageengine_opmanager 12.5 cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125232:*:*:*:*:*:*

References for CVE-2020-28653

cvelogic Threat Intelligence