CVE-2023-34834

Exp

A Directory Browsing vulnerability in MCL-Net version 4.3.5.8788 webserver running on default port 5080, allows attackers to gain sensitive information about the configured databases via the "/file" endpoint.

Published: 2023-06-29 Last update: 2024-11-26 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-34834 is rated High Exploit Risk (67.3/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 3.30%). 2 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2023-34834

EDB-ID Source Kind Published Link
51542 exploit_db edb 2023-06-23 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2023-34834

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-03-24 2.66% 3.30% +0.64%
2 2025-12-08 3.04% 2.66% -0.39%
3 2025-11-21 — 3.04% —

Full EPSS history (33 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-34834

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 1.4 [email protected]

Weakness enumeration for CVE-2023-34834

Affected software / configurations for CVE-2023-34834

Vendor Product Version Raw CPE
mcl-collection mcl-net_firmware 4.3.5.8788 cpe:2.3:o:mcl-collection:mcl-net_firmware:4.3.5.8788:*:*:*:*:*:*:*

References for CVE-2023-34834

URL Tags
http://www.mclv4.mcl-collection.com/index.php Product
https://www.exploit-db.com/exploits/51542 Exploit Third Party Advisory VDB Entry
cvelogic Threat Intelligence