Exploited vulnerabilities / CVE-2024-27199
Confirmed exploited · path traversal · JetBrains TeamCityCVE-2024-27199
JetBrains TeamCity path traversal, confirmed exploited in the wild.
JetBrains TeamCity contains a relative path traversal vulnerability that could allow limited admin actions to be performed.
| CISA's name for it | JetBrains TeamCity Relative Path Traversal Vulnerability |
|---|---|
| Vendor and product | JetBrains · TeamCity |
| Type | path traversal · CWE-23 |
| Exploited | Confirmed by CISA listed 20 April 2026 |
| Likelihood | one of the most likely to be exploited of every vulnerability tracked |
| Deadline | 4 May 2026 · already passed |
| Used in ransomware | Yes: CISA reports it used in ransomware campaigns |
| Advisories | www.jetbrains.com ↗ · blog.jetbrains.com ↗ · nvd.nist.gov ↗ |
Three steps, in this order
Apply the vendor fix.
Assume files readable through the flaw were read: rotate secrets and keys stored on the system.
Restrict access to the interface until patched.
| CISA's required action | Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. |
|---|
Know before someone else finds it
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CVE-2024-27199 in short
Is CVE-2024-27199 being exploited?
Yes. CISA added CVE-2024-27199 to its Known Exploited Vulnerabilities catalogue on 20 April 2026, which it does only on evidence of exploitation in the wild.
What is the CISA deadline for CVE-2024-27199?
US federal agencies must remediate it by 4 May 2026. Everyone else should treat that date as the latest safe point to patch an internet-facing system.
How likely is CVE-2024-27199 to be exploited in the next 30 days?
FIRST's Exploit Prediction Scoring System gives it 100%, the 99th percentile of every CVE it scores.
How do I fix CVE-2024-27199?
Apply the vendor fix. Assume files readable through the flaw were read: rotate secrets and keys stored on the system. Restrict access to the interface until patched.
Other JetBrains vulnerabilities being exploited
| CVE | Product | Type | Listed |
|---|---|---|---|
| CVE-2026-63077 | TeamCity | remote code execution | 5 August 2026 |
Sources: CISA Known Exploited Vulnerabilities catalogue (released 10 November 2026) and FIRST EPSS. Page compiled automatically by SAK T.L.M, the threat-intelligence tool of SAK T.E.C, on 13 November 2026.