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CVE-2024-27199 is a relative path traversal vulnerability in the web component of JetBrains TeamCity On-Premises affecting versions before 2023.11.4. The flaw can be reached over HTTP(S) without prior authentication and allows an attacker to bypass intended access controls for a limited set of authenticated administrative functions. Reported abuse includes access to authenticated endpoints that should not be reachable anonymously, modification of selected system settings, limited disclosure of sensitive information, replacement of the server HTTPS certificate, and alteration of the HTTPS listener port. Although narrower in scope than the companion authentication bypass issue CVE-2024-27198, this vulnerability still exposes security-sensitive administrative functionality to unauthenticated remote attackers.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
40 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A JetBrains TeamCity vulnerability that Microsoft says Storm-1175 has exploited.
A JetBrains TeamCity vulnerability previously exploited by Storm-1175 in campaigns that deployed Medusa ransomware.
A high-severity path traversal vulnerability in JetBrains TeamCity On-Premises that allows limited unauthenticated administrative actions and can contribute to broader system compromise.
A JetBrains TeamCity path traversal vulnerability mentioned as historical vendor security context and noted as exploited alongside CVE-2024-27198.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.