CVE-2023-4309
CVE-2023-4309 is a critical-severity vulnerability in Electionservicesco Internet Election Service with a CVSS 3.x base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-89.
Key facts
- Severity: Critical (CVSS 3.x base score 10.0)
- EPSS exploit prediction: 1% (60th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-89
- Affected product: Electionservicesco Internet Election Service
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2023-4309?
- 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.
- How severe is CVE-2023-4309?
- CVE-2023-4309 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2023-4309 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2023-4309?
- CVE-2023-4309 affects Electionservicesco Internet Election Service. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2023-4309?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2023-4309 published?
- CVE-2023-4309 was published on 2023-10-10 and last updated on 2026-06-17.
References
- https://schemasecurity.co/private-elections.pdf
- https://www.electionservicesco.com/pages/services_internet.php
- https://www.youtube.com/watch?v=yeG1xZkHc64
Affected products (1)
- cpe:2.3:a:electionservicesco:internet_election_service:-:*:*:*:*:*:*:*
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