CVE-2020-28653 in the critical feed json
Zoho ManageEngine OpManager Stable build before 125203 (and Released build before 125233) allows Remote Code Execution via the Smart Update…
published 2021-02-03 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-21051
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 77.9%
- EPSS 77.9% chance of exploitation in 30 days, percentile 99.5%
- public exploits
- 1
- Metasploit, plus a Nuclei check
Summary
Zoho ManageEngine OpManager Stable build before 125203 (and Released build before 125233) allows Remote Code Execution via the Smart Update Manager (SUM) servlet.
Patch / fix
- zohocorp manageengine_opmanager 12.5
Timeline
- Published
- First public exploit (Metasploit exploit/multi/http/opmanager_sumpdu_deserialization)
Exploit prediction
77.85% chance of exploitation in the next 30 days, higher than 99.5% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Metasploit exploit/multi/http/opmanager_sumpdu_deserialization ManageEngine OpManager SumPDU Java Deserialization metasploit exploit, excellent rank, 2021-07-26
- Nuclei template ManageEngine OpManager SumPDU 12.1 - 12.5.232 - Java Deserialization nuclei detection template
- packetstormsecurity.com http://packetstormsecurity.com/files/164231/ManageEngine-OpManager-SumPDU-Java-Deserialization.html referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
References
-
packetstormsecurity.com
/files/164231/ManageEngine-OpManager-SumPDU-Java-Deserialization.html
exploit, third-party-advisory, vdb-entry
-
manageengine.com
/network-monitoring/help/read-me-complete.html#125233
release-notes, vendor-advisory
-
manageengine.com
/network-monitoring/help/read-me-complete.html#125203
release-notes, vendor-advisory
Sources
- CVE List CVE-2020-28653
- NVD CVE-2020-28653
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.