HOMEVULNERABILITIESCVE-2026-30478
HIGH

CVE-2026-30478

Published: April 9, 2026· Updated: Apr 13, 2026

8.8
CVSS v3.1
EPSS:0.01%probability of exploitation in 30 daysPercentile:2.1th

Official Description

A Dynamic-link Library Injection vulnerability in GatewayGeo MapServer for Windows version 5 allows attackers to escalate privileges via a crafted executable.

NVD Source

Technical Analysis

CVE-2026-30478 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

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 8.8.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeChanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
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All References (2)

Quick Facts

CVE IDCVE-2026-30478
CVSS Score8.8 / 10
SeverityHIGH
CISA KEVNo
EPSS (30d)0.01%
PublishedApr 9, 2026

Recommended Actions

  • Apply vendor patches immediately
  • Monitor CVE-2026-30478 in threat intel feeds
  • Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.