CVE-2023-4309
CWE-89Published: October 10, 2023· Updated: Jun 17, 2026
Official Description
Election Services Co. (ESC) Internet Election Service is vulnerable to SQL injection in multiple pages and parameters. These vulnerabilities allow an unauthenticated, remote attacker to read or modify data for any elections that share the same backend database. ESC deactivated older and unused elections and enabled web application firewall (WAF) protection for current and future elections on or around 2023-08-12.
Risk Analysis
The Election Services Co. Internet Election Service is susceptible to SQL injection attacks across multiple pages. This allows unauthenticated remote attackers to read or modify sensitive election data.
No public exploit is known, and it is not in the CISA KEV. The vulnerability is remotely exploitable.
The vendor has implemented WAF protections; ensure all current election systems are utilizing these security controls.
Technical Analysis
CVE-2023-4309 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
All References (6)
Quick Facts
Related CVEs (CWE-89)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2023-4309 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts