cve-2026-63077

{
  "cvss": 9.8,
  "datePublished": "2026-07-27T17:16:38.830",
  "dateUpdated": "2026-10-24T13:10:00.147",
  "description": "In JetBrains TeamCity before 2026.1.3, 2025.11.7 unauthenticated remote code execution was possible via the agent polling protocol",
  "id": "CVE-2026-63077",
  "raw": {
    "affected": [
      {
        "affectedData": [
          {
            "defaultStatus": "unaffected",
            "product": "TeamCity",
            "vendor": "JetBrains",
            "versions": [
              {
                "lessThan": "2026.1.3, 2025.11.7",
                "status": "affected",
                "version": "0",
                "versionType": "semver"
              }
            ]
          }
        ],
        "source": "cve@jetbrains.com"
      }
    ],
    "cisaActionDue": "2026-08-08",
    "cisaExploitAdd": "2026-08-05",
    "cisaRequiredAction": "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 BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.",
    "cisaVulnerabilityName": "JetBrains TeamCity Deserialization of Untrusted Data Vulnerability",
    "configurations": [
      {
        "nodes": [
          {
            "cpeMatch": [
              {
                "criteria": "cpe:2.3:a:jetbrains:teamcity:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "4F865D53-6163-4A62-B8C1-06F45DA28E3C",
                "versionEndExcluding": "2025.11.7",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:a:jetbrains:teamcity:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "4CD39F06-B4AA-4300-B763-9362E98D50D6",
                "versionEndExcluding": "2026.1.3",
                "versionStartIncluding": "2026.1",
                "vulnerable": true
              }
            ],
            "negate": false,
            "operator": "OR"
          }
        ]
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "In JetBrains TeamCity before 2026.1.3, 2025.11.7 unauthenticated remote code execution was possible via the agent polling protocol"
      },
      {
        "lang": "es",
        "value": "En JetBrains TeamCity antes de 2026.1.3, 2025.11.7 era posible la ejecución remota de código no autenticada a través del protocolo de sondeo del agente."
      }
    ],
    "id": "CVE-2026-63077",
    "lastModified": "2026-10-24T13:10:00.147",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 5.9,
          "source": "cve@jetbrains.com",
          "type": "Secondary"
        }
      ],
      "ssvcV203": [
        {
          "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "ssvcData": {
            "id": "CVE-2026-63077",
            "options": [
              {
                "exploitation": "active"
              },
              {
                "automatable": "yes"
              },
              {
                "technicalImpact": "total"
              }
            ],
            "role": "CISA Coordinator",
            "timestamp": "2026-07-27T00:00:00+00:00",
            "version": "2.0.3"
          }
        }
      ]
    },
    "published": "2026-07-27T17:16:38.830",
    "references": [
      {
        "source": "cve@jetbrains.com",
        "tags": [
          "Vendor Advisory"
        ],
        "url": "https://www.jetbrains.com/privacy-security/issues-fixed/"
      },
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "tags": [
          "US Government Resource"
        ],
        "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-63077"
      }
    ],
    "sourceIdentifier": "cve@jetbrains.com",
    "vulnStatus": "Analyzed",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-502"
          }
        ],
        "source": "cve@jetbrains.com",
        "type": "Secondary"
      }
    ]
  },
  "severity": "CRITICAL",
  "source": "nvd",
  "title": "In JetBrains TeamCity before 2026.1.3, 2025.11.7 unauthenticated remote code execution was possible via the agent pol..."
}