Is CVE-2023-34237 actively exploited?

No active exploitation of CVE-2023-34237 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-34237 be exploited remotely?

Yes. CVE-2023-34237 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-34237?

CVE-2023-34237 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2023-34237

CRITICAL

CVE-2023-34237

CWE-94Published: June 7, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

SABnzbd is an open source automated Usenet download tool. A design flaw was discovered in SABnzbd that could allow remote code execution. Manipulating the Parameters setting in the Notification Script functionality allows code execution with the privileges of the SABnzbd process. Exploiting the vulnerabilities requires access to the web interface. Remote exploitation is possible if users[exposed their setup to the internet or other untrusted networks without setting a username/password. By default SABnzbd is only accessible from `localhost`, with no authentication required for the web interface. This issue has been patched in commits `e3a722` and `422b4f` which have been included in the 4.0.2 release. Users are advised to upgrade. Users unable to upgrade should ensure that a username and password have been set if their instance is web accessible.

NVD Source

Risk Analysis

SABnzbd contains a design flaw in its Notification Script functionality that allows remote code execution. If the web interface is exposed to the internet without authentication, an attacker can execute code with the privileges of the SABnzbd process. Users are urged to upgrade to version 4.0.2 to mitigate this critical risk.

No public exploit is known, and it is not in the CISA KEV. The vulnerability is remotely exploitable if the interface is exposed.

Recommended Action

Upgrade to SABnzbd 4.0.2 or later and ensure that the web interface is protected by a strong username and password.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2023-34237 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.