CVE-2026-63077

critical

Description

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

References

https://www.securityweek.com/hackers-start-exploiting-recent-jetbrains-teamcity-vulnerability/

https://thehackernews.com/2026/08/cisa-flags-teamcity-cve-2026-63077-rce.html

https://securityaffairs.com/196725/security/u-s-cisa-adds-a-jetbrains-teamcity-flaw-to-its-known-exploited-vulnerabilities-catalog.html

https://www.cisa.gov/news-events/alerts/2026/08/05/cisa-adds-one-known-exploited-vulnerability-catalog

https://www.securityweek.com/critical-code-execution-vulnerability-patched-in-teamcity/

https://www.bleepingcomputer.com/news/security/jetbrains-warns-of-critical-teamcity-remote-code-execution-flaw/

https://www.helpnetsecurity.com/2026/07/28/teamcity-rce-cve-2026-63077-fixed/

https://thehackernews.com/2026/07/critical-teamcity-flaw-could-let.html

https://securityaffairs.com/196169/security/jetbrains-patches-cvss-9-8-teamcity-flaw-allowing-server-takeover.html

https://www.jetbrains.com/privacy-security/issues-fixed/

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-63077

Details

Source: Mitre, NVD

Published: 2026-07-27

Updated: 2026-08-06

Known Exploited Vulnerability (KEV)

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.00649

Vulnerability Watch

Tenable Research has classified this CVE under the following Vulnerability Watch classification, which includes active and historical (inactive) classifications. You can learn more about these classifications on our blog.

Vulnerability of Interest