CVE-2020-13533

Local privilege escalation via writable logon binaries

Published Apr 9, 2021 · Updated Aug 4, 2024

Incorrect default permissions in Ocean Data Systems Dream Report 5 R20-2 allow local users to execute code with another user's privileges. The ods_rtm_launch and ods_usc Run values start RTM.exe and USC.exe at logon, while default ACLs grant Everyone full control over both binaries. A local user must replace either installation file before a new user logs in and launches the application, causing the substituted code to run in that user's context.

CVSS severity7.8
High
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect default permissions in Ocean Data Systems Dream Report 5 R20-2 allow local users to execute code with another user's privileges. The ods_rtm_launch and ods_usc Run values start RTM.exe and USC.exe at logon, while default ACLs grant Everyone full control over both binaries. A local user must replace either installation file before a new user logs in and launches the application, causing the substituted code to run in that user's context.

The record

CVE
CVE-2020-13533
Published
Apr 9, 2021
Updated
Aug 4, 2024
Vendor
Ocean Data Systems
Product
Dream Report
Classifications
CWE-276, T1547.001
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 9, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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?

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  1. Affected versionversion=Dream Report 5 R20-2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Ocean Data Systems · Dream Reportversion=Dream Report 5 R20-2

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
9.3Cisco TalosCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
4.4NIST NVDAV:L/AC:M/Au:N/C:P/I:P/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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-276Incorrect Default Permissions
T1547.001Registry Run Keys / Startup Folder

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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