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CVE-2023-38203 is a critical deserialization-of-untrusted-data vulnerability in Adobe ColdFusion 2018 Update 17 and earlier, ColdFusion 2021 Update 7 and earlier, and ColdFusion 2023 Update 1 and earlier. Processing attacker-controlled serialized data can result in arbitrary code execution on the ColdFusion server. The vulnerability has a CVSS score of 9.8 and has been actively exploited against internet-facing ColdFusion deployments.
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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.
14 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A previously reported ColdFusion deserialization of untrusted data vulnerability mentioned only in related content.
A critical ColdFusion deserialization of untrusted data vulnerability that could lead to arbitrary code execution.
An Adobe ColdFusion vulnerability cited as one of the known N-days exploited by Storm-0501/Embargo for initial access.
A known vulnerability affecting Adobe ColdFusion associated with Storm-0501's initial-access activity preceding Embargo ransomware deployment.
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.