CVE-2025-0526Network attack vector

Authenticated host file write via upload path traversal

Published Feb 11, 2025 · Updated Mar 18, 2025

Path traversal in Octopus Server allows remote authenticated users to write uploaded files to unexpected Windows host locations. An API upload field accepts attacker-controlled path data without validation and uses it to choose the host filesystem destination. Low-privileged API access is required; affected Windows versions are 2022.4.791 through 2024.3.13096 and 2024.4.401 through 2024.4.7090.

CVSS severity2.3
Low
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Octopus Server allows remote authenticated users to write uploaded files to unexpected Windows host locations. An API upload field accepts attacker-controlled path data without validation and uses it to choose the host filesystem destination. Low-privileged API access is required; affected Windows versions are 2022.4.791 through 2024.3.13096 and 2024.4.401 through 2024.4.7090.

The record

CVE
CVE-2025-0526
Published
Feb 11, 2025
Updated
Mar 18, 2025
Vendor
Octopus Deploy
Product
Octopus Server
Classifications
CWE-862, T1105
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 11, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 18, 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?

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

  1. Affected versionversion=2022.4.791 <2024.3.13097
  2. Affected versionversion=2024.4.401 <2024.4.7091

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Octopus Deploy · Octopus Serverversion=2022.4.791 <2024.3.13097; version=2024.4.401 <2024.4.7091

Published CVSS scores

2.3Octopus DeployCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
5.4NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

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-862Missing Authorization
T1105Ingress Tool Transfer

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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