CVE-2017-20128
CWE-89Published: July 13, 2022· Updated: Jun 17, 2026
Official Description
A vulnerability has been found in KB Messages PHP Script 1.0 and classified as critical. Affected by this vulnerability is an unknown functionality. The manipulation of the argument username/password with the input 'or''=' leads to sql injection. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.
Risk Analysis
KB Messages PHP Script 1.0 is vulnerable to SQL injection via the username and password fields. This critical flaw allows remote attackers to bypass authentication or manipulate the database.
A proof-of-concept exploit is publicly available, though the vulnerability is not in the KEV catalog. It is remotely exploitable with low attack complexity.
Upgrade to a secure version of the script or implement robust input sanitization for all authentication fields.
Technical Analysis
CVE-2017-20128 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.
From a weakness classification perspective (CWE-89): SQL injection vulnerabilities allow attackers to manipulate database queries, potentially exposing or modifying sensitive data.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (4)
Quick Facts
Related CVEs (CWE-89)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2017-20128 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts