Background exploitation KEV catalog No authentication
CVE-2021-44077

Zoho ManageEngine ServiceDesk Plus Remote Code Execution Vulnerability

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…

CheckOps priority index
9.1/10 Patch within 24 h
Severity9.8
Probability9.3
Exploitation4/5

Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.

EPSS · today 93.3% higher than 99.8% of CVEs
CVSS 3.1 9.8 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:
Exploited for 1,798 days 01 Dec 2021
CISA due date 15 Dec 2021 for US federal agencies

Exploitation probability EPSS · FIRST

05010026 Sep05 Oct15 Oct24 Oct02 Nov
EPSS probability (%)Percentile among all CVEs

Exploitation signals 4 / 5

  • KEV catalog (CISA)01 Dec 2021
  • Exploited in EUVD (ENISA)01 Dec 2021
  • Used by ransomwareno
  • EPSS above 10 %93.3%
  • No account, over the networkyes

What to do

Fix

Apply the vendor’s fix as soon as it is available.

CISA guidance: Apply updates per vendor instructions.

Meanwhile

Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.

Manufacturers (CRA)

Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained

Description ENISA EUVD

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.

Affected products

ManageEngine ServiceDesk Plus (SDP) / SupportCenter Plus
Weaknesses (CWE)

Open source packages OSV

Affected libraries according to OSV, with fixed versions.

Timeline

  1. Published

  2. Exploitation reported (ENISA)

  3. Added to the KEV catalog

  4. CISA remediation due date

  5. EPSS peak: 93.3%

References

Other exploited vulnerabilities from the same vendor

  • CVE-2022-28810Zoho ManageEngine ADSelfService Plus Remote Code Execution Vulnerability
    6.6 · Background exploitation
  • CVE-2022-47966Zoho ManageEngine Multiple Products Remote Code Execution Vulnerability
    9.9 · Background exploitation
  • CVE-2022-35405Zoho ManageEngine Multiple Products Remote Code Execution Vulnerability
    9.3 · Background exploitation
  • CVE-2021-44515Zoho Desktop Central Authentication Bypass Vulnerability
    9.3 · Background exploitation
  • CVE-2021-37415Zoho ManageEngine ServiceDesk Authentication Bypass Vulnerability
    9.3 · Background exploitation
  • CVE-2021-40539Zoho ManageEngine ADSelfService Plus Authentication Bypass Vulnerability
    9.9 · Background exploitation

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Sources: CISA KEV · ENISA EUVD · FIRST EPSS · OSV. Public data aggregated by CheckOps, updated automatically. Source texts remain the property of their authors. All exploited vulnerabilities