RCE in Xpressengine Zeroboard

CVE-2009-4834

lib.php in Zeroboard 4.1 pl7 allows remote attackers to execute arbitrary PHP code via a crafted parameter name, possibly related to now_connect.php.

Vulnerability class: RCE (Remote Code Execution)

Published 2010-05-04 · last modified 2026-06-16.

CVSS v2 metric

CVSS v2 base score 6.8 (Medium). Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.040 (90.2th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 90.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.040 · newest: 0.040 · change: 0.000

Affected products

Xpressengine Zeroboard — versions 4.1

Weakness classification (CWE)

CWE-94 — Code Injection

References

exchange.xforce.ibmcloud.com/vulnerabilities/53044 (vdb-entry)
www.exploit-db.com/exploits/9590 (exploit)
www.securityfocus.com/bid/36284 (Exploit, vdb-entry)