The DeviceIoControl function in the TrueVector Device Driver (VSDATANT) in ZoneAlarm before 3.7.211, Pro before 4.0.146.029, and Plus before 4.0.146.029 allows local users to gain privileges via certain signals (aka "Device Driver Attack").
Conclusion & alert: CVE-2003-1309 is rated High Exploit Risk (83.4/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 2.27%). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: 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.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
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 | 2026-06-28 | 2.20% | 2.27% | +0.07% |
| 2 | 2026-06-15 | 1.08% | 2.20% | +1.11% |
| 3 | 2025-03-30 | — | 1.08% | — |
Full EPSS history (12 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 10.0 | 2.0 | HIGH |
|
10.0 | 10.0 | [email protected] |
| URL | Tags |
|---|---|
| http://archives.neohapsis.com/archives/vulnwatch/2003-q3/0070.html | Exploit Vendor Advisory |
| http://download.zonelabs.com/bin/free/information/znalm/zaReleaseHistory.html | |
| http://sec-labs.hack.pl/advisories/seclabs-adv-zone-alarm-04-08-2003.txt | |
| http://sec-labs.hack.pl/papers/win32ddc.php | |
| http://secunia.com/advisories/9459 | Patch Vendor Advisory |
| http://www.osvdb.org/2375 | Patch Vendor Advisory |
| http://www.osvdb.org/4362 | Patch Vendor Advisory |
| http://www.securityfocus.com/bid/8342 | Vendor Advisory |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/12824 |