CVE-2023-36092
CWE-863Published: July 31, 2023· Updated: Jun 17, 2026
Official Description
Authentication Bypass vulnerability in D-Link DIR-859 FW105b03 allows remote attackers to gain escalated privileges via via phpcgi_main. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.
Risk Analysis
D-Link DIR-859 firmware contains an authentication bypass vulnerability that allows remote attackers to gain escalated privileges. This critical flaw is particularly dangerous because it affects devices that are no longer supported by the manufacturer.
There is no public exploit known, and it is not in CISA KEV. The flaw is remotely exploitable with low complexity.
Since the product is no longer supported, users should decommission the affected hardware and replace it with a currently supported device.
Technical Analysis
CVE-2023-36092 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.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (4)
Quick Facts
Related CVEs (CWE-863)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2023-36092 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts