JetBrains — known exploited vulnerabilities
The CISA Known Exploited Vulnerabilities catalog (KEV) lists vulnerabilities that CISA has confirmed are being exploited in the wild; U.S. federal civilian agencies are required to remediate each entry by its due date. This page joins the KEV entries for JetBrains with NVD CVSS scores and CISA's ransomware-campaign flag. See our methodology or browse all CVEs.
Key findings
CISA's Known Exploited Vulnerabilities catalog lists 4 JetBrains vulnerabilities confirmed as exploited in the wild across 1 product; 4 of them (100%) are flagged as used in known ransomware campaigns. All entries affect a single product: TeamCity. CISA added 2 entries in 2026 so far, compared with 0 in 2025. Across the 4 entries with an NVD CVSS score (100% of the total), the average score is 9.2; 3 entries are rated critical by NVD. The most recent addition is CVE-2026-63077 (JetBrains TeamCity Deserialization of Untrusted Data Vulnerability), added on 2026-08-05.
Affected products
| Product | Entries | Share |
|---|---|---|
| TeamCity | 4 | 100% |
Entries added per year
By date added to the KEV catalog
Exploited JetBrains vulnerabilities (4)
Newest first. CVSS scores from NVD where available.
| CVE | Product | Vulnerability | Date added | Ransomware | CVSS |
|---|---|---|---|---|---|
| CVE-2026-63077 | TeamCity | JetBrains TeamCity Deserialization of Untrusted Data Vulnerability | 2026-08-05 | Known | CRITICAL9.8 |
| CVE-2024-27199 | TeamCity | JetBrains TeamCity Relative Path Traversal Vulnerability | 2026-04-20 | Known | HIGH7.3 |
| CVE-2024-27198 | TeamCity | JetBrains TeamCity Authentication Bypass Vulnerability | 2024-03-07 | Known | CRITICAL9.8 |
| CVE-2023-42793 | TeamCity | JetBrains TeamCity Authentication Bypass Vulnerability | 2023-10-04 | Known | CRITICAL9.8 |
Source: CISA Known Exploited Vulnerabilities catalog, joined with NIST NVD CVSS data. Vendor names are normalized across spellings. Compare all vendors.