CVE-2025-59455Network attack vector

Cross-project isolation bypass via race condition

Published Sep 17, 2025 · Updated Sep 17, 2025

Race condition in JetBrains TeamCity before 2025.07.2 allows remote authenticated users to bypass project isolation over the network. JetBrains identifies a timing flaw but has not disclosed the affected code locus, shared resource, or incorrect synchronization operation. Exploitation requires a low-privilege account and winning the race; public sources do not identify the project resources exposed or modified.

CVSS severity4.2
Medium
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in JetBrains TeamCity before 2025.07.2 allows remote authenticated users to bypass project isolation over the network. JetBrains identifies a timing flaw but has not disclosed the affected code locus, shared resource, or incorrect synchronization operation. Exploitation requires a low-privilege account and winning the race; public sources do not identify the project resources exposed or modified.

The record

CVE
CVE-2025-59455
Published
Sep 17, 2025
Updated
Sep 17, 2025
Vendor
JetBrains
Product
TeamCity
Classifications
CWE-362, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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=0 <2025.07.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

JetBrains · TeamCityversion=0 <2025.07.2

Published CVSS scores

4.2JetBrainsCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/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 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-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
T1190Exploit Public-Facing Application

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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