CVE-2021-3287
Zoho ManageEngine OpManager before 12.5.329 allows unauthenticated Remote Code Execution due to a general bypass in the deserialization class.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 51.3%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
Description
Zoho ManageEngine OpManager before 12.5.329 allows unauthenticated Remote Code Execution due to a general bypass in the deserialization class.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 51.33% probability · 99th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-502
- Affected
- zohocorp/manageengine opmanager
- Source
- cve@mitre.org
EPSS 51.3% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://packetstormsecurity.com/files/164231/ManageEngine-OpManager-SumPDU-Java-Deserialization.htmlExploit, Third Party Advisory, VDB Entry
- https://www.manageengine.com/network-monitoring/help/read-me-complete.html#125329Release Notes, Vendor Advisory
- http://packetstormsecurity.com/files/164231/ManageEngine-OpManager-SumPDU-Java-Deserialization.htmlExploit, Third Party Advisory, VDB Entry
- https://www.manageengine.com/network-monitoring/help/read-me-complete.html#125329Release Notes, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.