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NVD / CVE Program· CNA JetBrains

CVE-2024-27198: In JetBrains TeamCity before 2023.11.4 authentication bypass allowing to perform admin actions was possible

CriticalCVSS 9.8 · v3.1KEVWeaponized Fix available

Noroxi assessment

Priority: Now (action score 99/100)

  • CISA has confirmed exploitation in the wild (Mar 7, 2024); it is known to be used in ransomware campaigns. Remediation deadline for US federal agencies: Mar 28, 2024.
  • A ready-made attack module is public (Metasploit, Nuclei); exploiting it takes no special expertise.
  • Probability of exploitation in the next 30 days: 99.9% (FIRST EPSS); higher than 99.9% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: JetBrains TeamCity 2023.11.4.

Patch today or shut off access. Upgrade to JetBrains TeamCity 2023.11.4 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · CISA KEV · FIRST EPSS

Published
Mar 4, 2024
Updated
Jun 17, 2026
EPSS
99.9% · 99th percentile

Report tools

JSON

Action score

99

Now

Patch today or shut off access.

CVSS
39 / 40 · 9.8 / 10
CISA KEV
30 / 30 · Listed
EPSS
30 / 30 · 99.9%

CISA SSVC decision

Exploitation
active
Automatable
yes
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
9.8
CNA · JetBrains
9.8
agree

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Actively exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on Mar 7, 2024. That signals real attacks, not theory.

Remediation deadline for US federal agencies: Mar 28, 2024.

Known to be used in ransomware campaigns.

Get told when this record changes

  • In CISA KEV: exploitation in the wild confirmed
  • Weaponized exploit exists
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2024-27198

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
jetbrainsteamcity

Versions reported by the vendor

Affected version ranges reported by the assigning authority (JetBrains). Independent of NVD's CPE analysis and usually ahead of it.

  • JetBrains TeamCity

    • before 2023.11.4affected · semver

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • jetbrains teamcitybefore 2023.11.4

Same product

jetbrains: all records

Other highest-scoring records for the same primary product.

  • CVE-2023-42793In JetBrains TeamCity before 2023.05.4 authentication bypass leading to RCE on TeamCity Server was possibleKEV
    99Now
  • CVE-2026-63077In JetBrains TeamCity before 2026.1.3, 2025.11.7 unauthenticated remote code execution was possible via the agent polling protocolKEV
    97Now
  • CVE-2024-27199In JetBrains TeamCity before 2023.11.4 path traversal allowing to perform limited admin actions was possibleKEV
    89Now

Published before and after this one in the same product

  • ← EarlierCVE-2024-24938Feb 6, 2024 · In JetBrains TeamCity before 2023.11.2 limited directory traversal was possible in the Kotlin DSL documentation
    21Monitor
  • ← EarlierCVE-2024-24942Feb 6, 2024 · In JetBrains TeamCity before 2023.11.3 path traversal allowed reading data within JAR archives
    31Monitor
  • Later →CVE-2024-28173Mar 6, 2024 · In JetBrains TeamCity between 2023.11 and 2023.11.4 custom build parameters of the "password" type could be disclosed
    17Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
JetBrains TeamCity2023.11.4Vendor (CNA)

Exploit status

Weaponized

A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.

Evidence

  • Metasploit module ×1
  • Exploit-DB entry ×1
  • Nuclei detection template ×1
  • Proof-of-concept repository on GitHub ×19

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Proof-of-concept repository on GitHub19 repositories2024-03-04 → 2026-10-19
Exploit-DB entrywebapps2025-08-11
Metasploit moduleexploit/multi/http/jetbrains_teamcity_rce_cve_2024_27198JetBrains TeamCity Unauthenticated Remote Code Executionexploit2024-03-04
Nuclei detection templateNuclei template CVE-2024-27198 —

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. First PoC-1 d
  2. Metasploit-1 d
  3. Published
  4. CISA KEV+2 d
  5. TodayNov 14, 2026+985 d

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2023-42793167 days apartIn JetBrains TeamCity before 2023.05.4 authentication bypass leading to RCE on TeamCity Server was possibleKEV
    99Now
  • CVE-2024-2391727 days apartIn JetBrains TeamCity before 2023.11.3 authentication bypass leading to RCE was possible
    55Plan
  • CVE-2024-3647086 days apartIn JetBrains TeamCity before 2022.04.7, 2022.10.6, 2023.05.6, 2023.11.5 authentication bypass was possible in specific edge cases
    39Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

  • CVE-2024-3636286 days apartIn JetBrains TeamCity before 2022.04.7, 2022.10.6, 2023.05.6, 2023.11.5, 2024.03.2 path traversal allowing to read files from server was…
    26Monitor

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · public bounty program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-288 · Authentication Bypass Using an Alternate Path or Channel

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

References

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records