Exploitation evidence
Known exploited · CISA KEV listed
Added 2026-04-20. Ransomware campaign use: Known.
CISA 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.
CISA due date: 2026-05-04. This is the catalog’s deadline, not an assessment of your organization’s exposure.
KEV checked 13 Nov 2026, 00:20 Jerusalem · Original catalog ↗Reported products and versions
JetBrains / TeamCity
Default status: unaffected
- affected: 0 to < 2023.11.4 (semver)
Fixes and workarounds
No explicit solution text in the downloaded CVE record. Consult the vendor advisory; unaffected version ranges are shown above as reported, not inferred as a patch recommendation.
Sources and related reporting
CVE Program record ↗ · Download tracked evidence as JSON
- https://www.jetbrains.com/privacy-security/issues-fixed/
- https://www.darkreading.com/cyberattacks-data-breaches/jetbrains-teamcity-mass-exploitation-underway-rogue-accounts-thrive
- https://github.com/Stuub/RCity-CVE-2024-27198/blob/main/RCity.py
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-27199
Observed change timeline
History begins when Egret first downloads each source. It is not the complete upstream CVE history.
12 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-12",
"epss": 0.99991,
"percentile": 0.99985
}10 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-10",
"epss": 0.99991,
"percentile": 0.99985
}09 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-09",
"epss": 0.99991,
"percentile": 0.99985
}08 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-08",
"epss": 0.99991,
"percentile": 0.99985
}07 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-07",
"epss": 0.99991,
"percentile": 0.99985
}06 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-06",
"epss": 0.99991,
"percentile": 0.99985
}06 Nov 2026, 06:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-05",
"epss": 0.99991,
"percentile": 0.99985
}04 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-04",
"epss": 0.99991,
"percentile": 0.99985
}04 Nov 2026, 06:20 Jerusalem · CVE Program record changed
Stored CNA snapshot at this observation.
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-02T00:27:59.868Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_transferred"
],
"url": "https://www.jetbrains.com/privacy-security/issues-fixed/"
},
{
"tags": [
"x_transferred"
],
"url": "https://www.darkreading.com/cyberattacks-data-breaches/jetbrains-teamcity-mass-exploitation-underway-rogue-accounts-thrive"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2024-27199",
"options": [
{
"Exploitation": "active"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-03-04T00:00:00+00:00",
"version": "2.0.3"
},
"type": "ssvc"
}
},
{
"other": {
"content": {
"dateAdded": "2026-04-20",
"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-27199"
},
"type": "kev"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-04-21T03:55:31.232Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/Stuub/RCity-CVE-2024-27198/blob/main/RCity.py"
},
{
"tags": [
"government-resource"
],
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-27199"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-04-20T00:00:00.000Z",
"value": "CVE-2024-27199 added to CISA KEV"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "TeamCity",
"vendor": "JetBrains",
"versions": [
{
"lessThan": "2023.11.4",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In JetBrains TeamCity before 2023.11.4 path traversal allowing to perform limited admin actions was possible"
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 7.3,
"baseSeverity": "HIGH",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-23",
"description": "CWE-23",
"lang": "en"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2024-03-11T14:15:27.549Z",
"orgId": "547ada31-17d8-4964-bc5f-1b8238ba8014",
"shortName": "JetBrains"
},
"references": [
{
"url": "https://www.jetbrains.com/privacy-security/issues-fixed/"
},
{
"url": "https://www.darkreading.com/cyberattacks-data-breaches/jetbrains-teamcity-mass-exploitation-underway-rogue-accounts-thrive"
}
]
}
},
"cveMetadata": {
"assignerOrgId": "547ada31-17d8-4964-bc5f-1b8238ba8014",
"assignerShortName": "JetBrains",
"cveId": "CVE-2024-27199",
"datePublished": "2024-03-04T17:21:40.081Z",
"dateReserved": "2024-02-21T09:53:25.423Z",
"dateUpdated": "2026-04-21T03:55:31.232Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}03 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-03",
"epss": 0.99991,
"percentile": 0.99985
}03 Nov 2026, 02:22 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-02",
"epss": 0.99991,
"percentile": 0.99985
}03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed
Stored KEV snapshot at this observation.
{
"cveID": "CVE-2024-27199",
"cwes": [
"CWE-23"
],
"dateAdded": "2026-04-20",
"dueDate": "2026-05-04",
"forensicTriage": "No",
"knownRansomwareCampaignUse": "Known",
"notes": "https://www.jetbrains.com/privacy-security/issues-fixed/ ; https://blog.jetbrains.com/teamcity/2024/03/additional-critical-security-issues-affecting-teamcity-on-premises-cve-2024-27198-and-cve-2024-27199-update-to-2023-11-4-now/ ; https://nvd.nist.gov/vuln/detail/CVE-2024-27199",
"product": "TeamCity",
"requiredAction": "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.",
"shortDescription": "JetBrains TeamCity contains a relative path traversal vulnerability that could allow limited admin actions to be performed.",
"vendorProject": "JetBrains",
"vulnerabilityName": "JetBrains TeamCity Relative Path Traversal Vulnerability"
}