CVE-2021-36096Network attack vector

Private-key disclosure via unrestricted support-bundle archiving

Published Sep 6, 2021 · Updated Sep 16, 2024

Information disclosure in OTRS and ((OTRS)) Community Edition allows remote authenticated users to retrieve private keys from support bundles. The support-bundle generator archives installation files without excluding S/MIME and PGP keys whose containing directory is not hidden. Exploitation requires high-privileged access and user interaction, and the resulting disclosure is limited to key material packaged in the bundle.

CVSS severity5.2
Medium
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in OTRS and ((OTRS)) Community Edition allows remote authenticated users to retrieve private keys from support bundles. The support-bundle generator archives installation files without excluding S/MIME and PGP keys whose containing directory is not hidden. Exploitation requires high-privileged access and user interaction, and the resulting disclosure is limited to key material packaged in the bundle.

The record

CVE
CVE-2021-36096
Published
Sep 6, 2021
Updated
Sep 16, 2024
Vendor
OTRS AG
Product
OTRS
Classifications
CWE-312, CWE-200, T1552.001
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Sep 6, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=7.0.x <=7.0.28
  2. Affected versionversion=8.0.x <=8.0.15

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

OTRS AG · OTRSversion=7.0.x <=7.0.28; version=8.0.x <=8.0.15
OTRS AG · ((OTRS)) Community Editionversion=6.0.1 <6.0.x*

Published CVSS scores

4.9NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
4.0NIST NVDAV:N/AC:L/Au:S/C:P/I:N/A:N
5.2OTRS AGCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:N

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

Weakness, pattern, technique

CWE-312Cleartext Storage of Sensitive Information
CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1552.001Credentials In Files

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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