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CVE-2025-27364 is a remote code execution vulnerability in MITRE Caldera affecting versions through 4.2.0 and 5.0.0 before commit 35bc06e, and described by advisory sources as affecting versions prior to 5.1.0. The flaw exists in the server-side dynamic compilation functionality used to build and download Caldera Sandcat and Manx agents (implants). The compilation API accepts attacker-controlled parameters that are passed to the gcc toolchain, including linker flags. An attacker can submit a crafted web request to the Caldera server API and abuse the gcc -extldflags option to inject sub-commands, resulting in arbitrary command execution on the host running the Caldera server. The issue is described as unauthenticated in the provided supporting content.
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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.
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A remote code execution vulnerability affecting MITRE Caldera, referenced in a nuclei template pull request.
An unauthenticated remote code execution vulnerability in MITRE Caldera.
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.