CVE-2023-22890Network attack vector

Unauthenticated service interruption via unrestricted file uploads

Published Mar 8, 2023 · Updated Mar 5, 2025

Unrestricted file upload in SmartBear Zephyr Enterprise 7.15.0 and earlier allows remote attackers to exhaust local disk space. The upload path accepts attacker-supplied files without enforcing a size limit before writing them to the local drive. No account is required; filling the drive can interrupt Zephyr Enterprise service, while no confidentiality or integrity impact is reported.

CVSS severity7.5
High
EPSS probability0.64%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in SmartBear Zephyr Enterprise 7.15.0 and earlier allows remote attackers to exhaust local disk space. The upload path accepts attacker-supplied files without enforcing a size limit before writing them to the local drive. No account is required; filling the drive can interrupt Zephyr Enterprise service, while no confidentiality or integrity impact is reported.

The record

CVE
CVE-2023-22890
Published
Mar 8, 2023
Updated
Mar 5, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-434, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 8, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 5, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
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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