CVE-2026-111094

JetBrains TeamCity critical remote code execution, CVSS 9.8.

In JetBrains TeamCity before 2026.2, 2026.1.4, 2025.11.8 remote code execution via a whitelist bypass in the build messages protocol was possible

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9.8CVSS base score: critical, the highest band

0.4%chance of exploitation in the next 30 days (EPSS), 33rd percentile

15 Octfirst published, 2026

Not yeton CISA's exploited list, as of 14 November 2026

Vendor and product	JetBrains · TeamCity
Type	remote code execution
Severity	Critical 9.8 CVSS base score
Affected versions	TeamCity: before 2026.2, 2026.1.4, 2025.11.8
First published	15 October 2026
Weakness	CWE-502
Exploited	Not confirmed. Critical flaws in JetBrains products have been exploited before: JetBrains appears on CISA's exploited list.

What to do

Patch before it is exploited

Step 1

Patch to the fixed version the vendor names, today if the product faces the internet.

Step 2

Until it is patched, take the affected service off the internet or put it behind a VPN or allow-list.

Step 3

Look for signs it was already used: new accounts, web shells, unexpected processes and outbound connections since the date it was listed.

Is it on your estate?

Know the day it starts being used

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Questions

CVE-2026-111094 in short

Is CVE-2026-111094 being exploited?

Not confirmed as of 14 November 2026: CISA has not added it to its Known Exploited Vulnerabilities catalogue. Critical flaws in JetBrains products are a frequent target, so patch before that changes; this page is updated daily.

How severe is CVE-2026-111094?

NVD rates it critical, with a CVSS base score of 9.8.

Which versions of JetBrains TeamCity are affected by CVE-2026-111094?

According to the CVE record: TeamCity: before 2026.2, 2026.1.4, 2025.11.8. Check the vendor's advisory for the fixed version.

How do I fix CVE-2026-111094?

Patch to the fixed version the vendor names, today if the product faces the internet. Until it is patched, take the affected service off the internet or put it behind a VPN or allow-list. Look for signs it was already used: new accounts, web shells, unexpected processes and outbound connections since the date it was listed.

Sources: NVD, the CVE record, FIRST EPSS and the CISA Known Exploited Vulnerabilities catalogue. Page compiled automatically by SAK T.L.M, the threat-intelligence tool of SAK T.E.C, on 14 November 2026.