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NVD / CVE Program· CNA mitre

CVE-2021-44077: Zoho ManageEngine ServiceDesk Plus before 11306, ServiceDesk Plus MSP before 10530, and SupportCenter Plus before 11014 are vulnerable to un

Noroxi assessment

Priority: Now (action score 97/100)

  • CISA has confirmed exploitation in the wild (Dec 1, 2021). Remediation deadline for US federal agencies: Dec 15, 2021.
  • A ready-made attack module is public (Metasploit, Nuclei); exploiting it takes no special expertise.
  • Probability of exploitation in the next 30 days: 93.2% (FIRST EPSS); higher than 99.8% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • According to the record, no fixed version is available yet.
  • Mentioned 6 times in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Patch today or shut off access. Until a fix is released, restrict access to the affected component and follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · CISA KEV · FIRST EPSS

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.

CriticalCVSS 9.8 · v3.1KEVWeaponized No fix recorded
Published
Nov 29, 2021
Updated
Jun 17, 2026
EPSS
93.2% · 99th percentile

Report tools

JSON

Action score

97

Now

Patch today or shut off access.

CVSS
39 / 40 · 9.8 / 10
CISA KEV
30 / 30 · Listed
EPSS
28 / 30 · 93.2%

CISA SSVC decision

Exploitation
active
Automatable
yes
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

Actively exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on Dec 1, 2021. That signals real attacks, not theory.

Remediation deadline for US federal agencies: Dec 15, 2021.

Get told when this record changes

  • In CISA KEV: exploitation in the wild confirmed
  • Weaponized exploit exists
  • No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2021-44077

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
zohocorpmanageengine servicedesk plus
zohocorpmanageengine servicedesk plus msp
zohocorpmanageengine supportcenter plus

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • zohocorp manageengine servicedesk plusbefore 11.1
  • zohocorp manageengine servicedesk plus11.1
  • zohocorp manageengine servicedesk plus11.2
  • zohocorp manageengine servicedesk plus11.3
  • zohocorp manageengine servicedesk plus mspbefore 10.5
  • zohocorp manageengine servicedesk plus msp10.5
  • zohocorp manageengine supportcenter plusbefore 11.0
  • zohocorp manageengine supportcenter plus11.0

Same product

zohocorp: all records

Other highest-scoring records for the same primary product.

  • CVE-2021-37415Zoho ManageEngine ServiceDesk Plus before 11302 is vulnerable to authentication bypass that allows a few REST-API URLs without authenticatioKEV
    99Now
  • CVE-2019-8394Zoho ManageEngine ServiceDesk Plus (SDP) before 10.0 build 10012 allows remote attackers to upload arbitrary files via login page customizatKEV
    75This week
  • CVE-2022-40770Zoho ManageEngine ServiceDesk Plus versions 13010 and prior are vulnerable to authenticated command injection.
    52Plan

Published before and after this one in the same product

  • ← EarlierCVE-2021-20081Jun 10, 2021 · Incomplete List of Disallowed Inputs in ManageEngine ServiceDesk Plus before version 11205 allows a remote, authenticated attacker to execut
    44Plan
  • ← EarlierCVE-2021-31160Jun 29, 2021 · Zoho ManageEngine ServiceDesk Plus MSP before 10521 allows an attacker to access internal data.
    31Monitor
  • Later →CVE-2021-44526Dec 23, 2021 · Zoho ManageEngine ServiceDesk Plus before 12003 allows authentication bypass in certain admin configurations.
    40Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

Weaponized

A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.

Evidence

  • Metasploit module ×1
  • Nuclei detection template ×1
  • Proof-of-concept repository on GitHub ×2

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Nuclei detection templateNuclei template CVE-2021-44077 —
Metasploit moduleexploit/windows/http/manageengine_servicedesk_plus_cve_2021_44077ManageEngine ServiceDesk Plus CVE-2021-44077exploit2021-09-16
Proof-of-concept repository on GitHubstars:362021-12-08
Proof-of-concept repository on GitHubstars:22022-09-29

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Metasploit-74 d
  2. Published
  3. CISA KEV+2 d
  4. First PoC+9 d
  5. TodayNov 8, 2026+1805 d

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

—

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

  • CVE-2021-20081172 days apartIncomplete List of Disallowed Inputs in ManageEngine ServiceDesk Plus before version 11205 allows a remote, authenticated attacker to execut
    44Plan

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-306 · Missing Authentication for Critical Function

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Root cause

A function added for development or support ships to production without authentication. It often relies on the assumption that it is “only reachable from the internal network.”

The bug in code

The whole CWE-306 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
// Added for the support teamapp.post("/maintenance/reset", resetDevice);

Fixed

ts
if (config.maintenanceEnabled) {  app.post(    "/maintenance/reset",    requireSession, requireRole("admin"), resetDevice  );}

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Show all references (4 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records