VulnTideExploited vulnerabilities, by vendor. Data as of .
Known exploitedIn CISA's KEV catalog since Ransomware use: unknown
Zoho ManageEngine ServiceDesk Plus (SDP) / SupportCenter Plus

CVE-2021-44077: Zoho ManageEngine ServiceDesk Plus Remote Code Execution Vulnerability

Is it exploited?

Yes. CISA added it to the Known Exploited Vulnerabilities catalog on , 2 days after the CVE record was published.

How likely is exploitation in the next 30 days?
93.3%

EPSS score, percentile 99.8 of all scored records

How severe?
9.8 Critical

CVSS v3.1 base score, from CISA's enrichment of the record

What should I do?

CISA deadline . Apply updates per vendor instructions.

The CVE record links no vendor advisory, patch or mitigation.

Which versions are affected?

Not stated. The CVE record gives vendor and product as “n/a” and the version as “unspecified”.

Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of ; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of ; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of . About the data.

What to do

Required action, set by CISA

Apply updates per vendor instructions.

CISA due date for this action: .

Advisories and patches

The CVE record links no vendor advisory, patch or mitigation.

Linked from CISA's catalog entry

Affected products and versions

The CVE record does not name affected products or versions: vendor and product are “n/a” and the version is “unspecified”.

Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of . About the data.

About this vulnerability

Zoho ManageEngine ServiceDesk Plus before 11306, ServiceDesk Plus MSP before 10530, and SupportCenter Plus before 11014 are vulnerable to unauthenticated remote code execution

Summary: CISA's KEV catalog, as of .

  • CISA added CVE-2021-44077 to its Known Exploited Vulnerabilities (KEV) catalog on 1 Dec 2021.
  • CISA's ransomware flag for this entry is "Unknown": no evidence of ransomware use in the catalog, which is not proof of none.
  • The due date CISA sets for the required action is 15 Dec 2021.
  • The CVE record was published on 29 Nov 2021, 2 days before it was added to KEV.
  • The CVE record carries a CVSS v3.1 base score of 9.8 (Critical), taken from CISA's enrichment of the record.
  • FIRST's EPSS model puts the probability of exploitation in the next 30 days at 93.3% (percentile 99.8), as of 28 Oct 2026.
  • CISA's SSVC assessment in the CVE record: exploitation active, automatable yes, technical impact total.

Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of ; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of ; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of . About the data.

Description

Zoho ManageEngine ServiceDesk Plus before 11306, ServiceDesk Plus MSP before 10530, and SupportCenter Plus before 11014 are vulnerable to unauthenticated remote code execution. This is related to /RestAPI URLs in a servlet, and ImportTechnicians in the Struts configuration.

Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of . About the data.

Weakness

  • CWE-306: Missing Authentication for Critical Function

CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record and the KEV entry.

Timeline

DateEvent
CVE record published
Added to CISA KEV
CISA due date for the required action
CVE record last updated

References

More exploited Zoho vulnerabilities

  • CVE-2022-28810: Zoho ManageEngine ADSelfService Plus Remote Code Execution Vulnerability (added )
  • CVE-2022-47966: Zoho ManageEngine Multiple Products Remote Code Execution Vulnerability (added )
  • CVE-2022-35405: Zoho ManageEngine Multiple Products Remote Code Execution Vulnerability (added )
  • CVE-2021-44515: Zoho Desktop Central Authentication Bypass Vulnerability (added )
  • CVE-2021-37415: Zoho ManageEngine ServiceDesk Authentication Bypass Vulnerability (added )
  • CVE-2019-8394: Zoho ManageEngine ServiceDesk Plus (SDP) File Upload Vulnerability (added )