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CVE-2024-23917 is a critical authentication bypass vulnerability in JetBrains TeamCity On-Premises that affects versions 2017.1 through 2023.11.2. The flaw allows an unauthenticated attacker with HTTP(S) access to a vulnerable TeamCity server to bypass authentication checks and gain administrative control of the server. Because TeamCity is a CI/CD platform with privileged access to projects, build configurations, agents, artifacts, and deployment workflows, administrative compromise can directly lead to remote code execution and full server takeover.
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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.
If you can’t patch tonight, do this now.
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.
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical TeamCity authentication bypass leading to RCE, mentioned in a historical security table.
A previously disclosed critical JetBrains TeamCity vulnerability that could enable an unauthenticated attacker to gain administrative control of TeamCity servers.
A critical unauthenticated remote takeover vulnerability in JetBrains TeamCity on-prem that can grant administrative control of the server.
A critical authentication bypass in JetBrains TeamCity On-Premises that can allow an unauthenticated remote attacker with HTTP(S) access to gain administrative control of the TeamCity server.
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.