CVE-2016-6589Network attack vector

Authenticated service interruption via workflow login requests

Published Jan 8, 2020 · Updated Aug 6, 2024

Denial of service in Symantec IT Management Suite before 8.0 HF4 allows remote authenticated users to interrupt its workflow service. The flaw is exposed by the Workflow Process Manager login window, but Symantec has not published the input-handling operation that fails. Access to that login interface is required; successful exploitation interrupts availability without reported data disclosure or modification.

CVSS severity6.5
Medium
EPSS probability1.68%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Symantec IT Management Suite before 8.0 HF4 allows remote authenticated users to interrupt its workflow service. The flaw is exposed by the Workflow Process Manager login window, but Symantec has not published the input-handling operation that fails. Access to that login interface is required; successful exploitation interrupts availability without reported data disclosure or modification.

The record

CVE
CVE-2016-6589
Published
Jan 8, 2020
Updated
Aug 6, 2024
Vendor
Symantec
Product
Symantec IT Management Suite
Classifications
CWE-20, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 8, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=before 8.0 HF4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Symantec · Symantec IT Management Suiteversion=before 8.0 HF4

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4.0NIST NVDAV:N/AC:L/Au:S/C:N/I:N/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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