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CVE-2025-27203 is a critical deserialization of untrusted data vulnerability in Adobe Connect 24.0 and earlier. The flaw allows attacker-controlled serialized data to be processed in an unsafe manner, which can result in arbitrary code execution. Available reporting indicates exploitation requires user interaction and that successful exploitation results in a scope change, consistent with code execution in a different security context than the initial attack vector. The issue affects Adobe Connect deployments prior to the fixed release.
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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.
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Critical insecure deserialization vulnerability in Adobe Connect leading to remote code execution.
A critical deserialization of untrusted data vulnerability in Adobe Connect Windows App (version 24 and earlier) that could allow arbitrary code execution.
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.