CVE Details
CVE-2026-63077
JetBrains TeamCity Deserialization of Untrusted Data Vulnerability
Published: 2026-08-05
CVSS: 9.8 CRITICAL
Product: JetBrains TeamCity
Due Date: 2026-08-08
JetBrains TeamCity contains a deserialization of untrusted data vulnerability that could allow unauthenticated remote code execution via the agent polling protocol.
GitHub PoC
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No GitHub PoC data.
FIRST EPSS
EPSS estimates the probability of exploitation in the next 30 days. Higher values indicate higher likelihood of real-world exploitation.
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References
Show Raw Data
| Key | Remaining Key | Value |
|---|---|---|
| dataType | CVE_RECORD | |
| dataVersion | 5.2 | |
| cveMetadata > | cveId | CVE-2026-63077 |
| cveMetadata > | assignerOrgId | 547ada31-17d8-4964-bc5f-1b8238ba8014 |
| cveMetadata > | state | PUBLISHED |
| cveMetadata > | assignerShortName | JetBrains |
| cveMetadata > | dateReserved | 2026-07-15T15:12:38.892Z |
| cveMetadata > | datePublished | 2026-07-27T16:44:32.290Z |
| cveMetadata > | dateUpdated | 2026-08-05T17:48:23.081Z |
| containers > | cna > providerMetadata > orgId | 547ada31-17d8-4964-bc5f-1b8238ba8014 |
| containers > | cna > providerMetadata > shortName | JetBrains |
| containers > | cna > providerMetadata > dateUpdated | 2026-07-27T16:44:32.290Z |
| containers > | cna > problemTypes > 0 > descriptions > 0 > lang | en |
| containers > | cna > problemTypes > 0 > descriptions > 0 > description | CWE-502 |
| containers > | cna > problemTypes > 0 > descriptions > 0 > cweId | CWE-502 |
| containers > | cna > affected > 0 > vendor | JetBrains |
| containers > | cna > affected > 0 > product | TeamCity |
| containers > | cna > affected > 0 > versions > 0 > version | 0 |
| containers > | cna > affected > 0 > versions > 0 > status | affected |
| containers > | cna > affected > 0 > versions > 0 > lessThan | 2026.1.3, 2025.11.7 |
| containers > | cna > affected > 0 > versions > 0 > versionType | semver |
| containers > | cna > affected > 0 > defaultStatus | unaffected |
| containers > | cna > descriptions > 0 > lang | en |
| containers > | cna > descriptions > 0 > value | In JetBrains TeamCity before 2026.1.3, 2025.11.7 unauthenticated remote code execution was possible via the agent polling protocol |
| containers > | cna > references > 0 > url | https://www.jetbrains.com/privacy-security/issues-fixed/ |
| containers > | cna > metrics > 0 > format | CVSS |
| containers > | cna > metrics > 0 > scenarios > 0 > lang | en |
| containers > | cna > metrics > 0 > scenarios > 0 > value | GENERAL |
| containers > | cna > metrics > 0 > cvssV3_1 > version | 3.1 |
| containers > | cna > metrics > 0 > cvssV3_1 > attackVector | NETWORK |
| containers > | cna > metrics > 0 > cvssV3_1 > attackComplexity | LOW |
| containers > | cna > metrics > 0 > cvssV3_1 > privilegesRequired | NONE |
| containers > | cna > metrics > 0 > cvssV3_1 > userInteraction | NONE |
| containers > | cna > metrics > 0 > cvssV3_1 > scope | UNCHANGED |
| containers > | cna > metrics > 0 > cvssV3_1 > confidentialityImpact | HIGH |
| containers > | cna > metrics > 0 > cvssV3_1 > integrityImpact | HIGH |
| containers > | cna > metrics > 0 > cvssV3_1 > availabilityImpact | HIGH |
| containers > | cna > metrics > 0 > cvssV3_1 > baseScore | 9.8 |
| containers > | cna > metrics > 0 > cvssV3_1 > baseSeverity | CRITICAL |
| containers > | cna > metrics > 0 > cvssV3_1 > vectorString | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| containers > | adp > 0 > references > 0 > url | https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-63077 |
| containers > | adp > 0 > references > 0 > tags > 0 | government-resource |
| containers > | adp > 0 > metrics > 0 > other > type | ssvc |
| containers > | adp > 0 > metrics > 0 > other > content > timestamp | 2026-08-05T17:46:04.215479Z |
| containers > | adp > 0 > metrics > 0 > other > content > id | CVE-2026-63077 |
| containers > | adp > 0 > metrics > 0 > other > content > options > 0 > Exploitation | active |
| containers > | adp > 0 > metrics > 0 > other > content > options > 1 > Automatable | yes |
| containers > | adp > 0 > metrics > 0 > other > content > options > 2 > Technical Impact | total |
| containers > | adp > 0 > metrics > 0 > other > content > role | CISA Coordinator |
| containers > | adp > 0 > metrics > 0 > other > content > version | 2.0.3 |
| containers > | adp > 0 > title | CISA ADP Vulnrichment |
| containers > | adp > 0 > providerMetadata > orgId | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| containers > | adp > 0 > providerMetadata > shortName | CISA-ADP |
| containers > | adp > 0 > providerMetadata > dateUpdated | 2026-08-05T17:48:23.081Z |