DOM-based XSS in Adobe Connect
CVE-2025-49553 is a DOM-based cross-site scripting vulnerability affecting Adobe Connect versions 12.9 and earlier. The issue is in the Adobe Connect web client, where client-side JavaScript processes attacker-controllable data from DOM sources such as URLs or location-derived values and inserts it into the page without sufficient sanitization or neutralization. This allows a crafted URL or malicious web page to trigger execution of arbitrary JavaScript in the victim’s browser within the Adobe Connect origin/context. The flaw is entirely client-side, does not require authentication, and affects Adobe Connect deployments using vulnerable versions, including hosted, managed service, and on-premises environments.
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
If you can’t patch tonight, do this now.
Remediation
Patch, then assume compromise.
Exploits
No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
Affected products & vendors
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.
Recent activity
7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical DOM-based cross-site scripting (XSS) vulnerability in Adobe Connect that could allow attackers to execute arbitrary code on targeted systems.
A critical DOM-based cross-site scripting (XSS) vulnerability in Adobe Connect that could lead to arbitrary code execution.
A DOM-based cross-site scripting vulnerability in Adobe Connect 12.9 and earlier that can allow arbitrary JavaScript execution in a victim's browser, leading to session hijacking and exposure of sensitive meeting data.
The version that knows your environment.
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.