Vulnerability

CVE-2024-27199

High· 7.3KEVCVSS7.3EPSS91%

.rules3/5

JetBrains TeamCity Relative Path Traversal Vulnerability

JetBrains TeamCity contains a relative path traversal vulnerability that could allow limited admin actions to be performed.

Threat signal

99/100

Severe

Severity

high

CVSS

7.3

EPSS

91%

Active

KEV

CISA KEV — actively exploited

Ransomware: Known40d overdue

AffectedJetBrains — TeamCity

Added to KEV

2026-04-20

Federal patch due (BOD 22-01)

2026-05-04

Required action (CISA verbatim)

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Vendor advisory + references

CISA description: “JetBrains TeamCity contains a relative path traversal vulnerability that could allow limited admin actions to be performed.”

CVSS

v3.1Open in FIRST calculator →

7.3/ 10HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Attack VectorNetworkExploitable remotely over the internet — no local access needed.
Attack ComplexityLowNo special conditions — exploit works reliably.
Privileges RequiredNoneUnauthenticated — no credentials needed.
User InteractionNoneFully automated — no victim action needed.
ScopeUnchangedImpact contained to the vulnerable component.
Confidentiality ImpactLowSome data disclosure; attacker doesn't fully control what.
Integrity ImpactLowSome data modification; attacker doesn't fully control extent.
Availability ImpactLowReduced performance / interruptions.

EPSS

Exploit prediction · 30-day horizonFIRST.org →

90.9%

probability of exploitation in next 30 days

p100

higher than 100% of all CVEs

3-day trend↑ 0pp

Statistically about to be weaponized — top-tier triage urgency.

Vendor VEX

No VEX statements published for CVE-2024-27199. Vendors publish VEX (Vulnerability Exploitability eXchange) to assert per-product whether a CVE is actually exploitable in their distribution.

SSVCAct

Active exploitation with total impact on essential/support systems

exploitation: active
automatable: no
impact: total
mission: support

Lifecycle

2026-04-20Added to CISA KEVransomware: Known
2026-04-20Published
2026-05-04Federal patch due (BOD 22-01)
2026-06-12Last modified1 source

Mentions in news & research

research:wizAuthentication bypass vulnerabilities in TeamCity: everything you need to know2024-03-06

No source-event history recorded yet. New revisions will appear here as ingestors re-fetch this CVE.