JetBrains TeamCity prior 2026.1.3/2025.11.7 Agent Polling Protocol code injection

CVSS Meta Temp Score
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CTI Interest Score
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8.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in JetBrains TeamCity. This affects an unknown part of the component Agent Polling Protocol. Performing a manipulation results in code injection. This vulnerability is reported as CVE-2026-63077. The attack is possible to be carried out remotely. Moreover, an exploit is present.

Detailsinfo

A vulnerability classified as critical has been found in JetBrains TeamCity. This affects an unknown functionality of the component Agent Polling Protocol. The manipulation with an unknown input leads to a code injection vulnerability. CWE is classifying the issue as CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

In JetBrains TeamCity before 2026.1.3, 2025.11.7 unauthenticated remote code execution was possible via the agent polling protocol

The advisory is shared at jetbrains.com. This vulnerability is uniquely identified as CVE-2026-63077 since 07/15/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are unknown but an exploit is available. MITRE ATT&CK project uses the attack technique T1059 for this issue.

It is declared as attacked. The vulnerability scanner Nessus provides a plugin with the ID 330833 (JetBrains TeamCity < 2025.11.7 / 2026.1.x < 2026.1.3 RCE (CVE-2026-63077)), which helps to determine the existence of the flaw in a target environment. The CISA Known Exploited Vulnerabilities Catalog lists this issue since 08/05/2026 with a due date of 08/08/2026:

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BO

Upgrading to version 2026.1.3 or 2025.11.7 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (330833). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 9.8
CNA Vector (JetBrains): 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Code injection
CWE: CWE-94 / CWE-74 / CWE-707
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Attacked

EPSS Score: 🔒
EPSS Percentile: 🔒

KEV Added: 🔒
KEV Due: 🔒
KEV Remediation: 🔒
KEV Ransomware: 🔒
KEV Notice: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 330833
Nessus Name: JetBrains TeamCity < 2025.11.7 / 2026.1.x < 2026.1.3 RCE (CVE-2026-63077)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: TeamCity 2026.1.3/2025.11.7

Timelineinfo

07/15/2026 CVE reserved
07/27/2026 +12 days Advisory disclosed
07/27/2026 +0 days VulDB entry created
08/10/2026 +13 days VulDB entry last update

Sourcesinfo

Advisory: jetbrains.com
Status: Confirmed

CVE: CVE-2026-63077 (🔒)
GCVE (CVE): GCVE-0-2026-63077
GCVE (VulDB): GCVE-100-383517
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 07/27/2026 19:20
Updated: 08/10/2026 00:08
Changes: 07/27/2026 19:20 (54), 07/30/2026 15:11 (2), 08/05/2026 23:13 (12), 08/10/2026 00:08 (11)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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