Security Resilience

CVE-2026-30479

RCE

RCE
Published
09 April 2026
Modified
14 April 2026
CVSS Score v3.1 9.1
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS Score 0.0054 45th percentile
Risk Priority 67 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2026-30479 is a critical-severity Code Injection (CWE-94) vulnerability in Mapserver (inferred from references). Its CVSS base score is 9.1 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 45th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to SA-11 (Developer Testing and Evaluation) and SI-10 (Information Input Validation) — see the control section below for these in your framework.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

CVE-2026-30479 is a Dynamic-link Library (DLL) Injection vulnerability, classified as CWE-94, affecting OSGeo Project MapServer versions before 8.0. Published on April 9, 2026, this flaw allows attackers to execute arbitrary code through a crafted executable interacting with the software.

The vulnerability has a CVSS v3.1 base score of 9.1 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N), indicating it is exploitable over the network with low attack complexity, no required privileges or user interaction, and unchanged scope. Remote, unauthenticated attackers can leverage it to execute arbitrary code, resulting in high impacts to confidentiality and integrity but no availability disruption.

Mitigation requires upgrading to MapServer version 8.0 or later, as the vulnerability affects prior releases. Further technical details are documented in the research repository at https://github.com/penjaminTester/Research/tree/main/CVE-2026-30479 and on the official MapServer site at https://mapserver.org/.

OWASP Top 10 for Web (2025)

A05:2025 Injection

EU & UK References

Vulnerability Data

A Dynamic-link Library Injection vulnerability in OSGeo Project MapServer before v8.0 allows attackers to execute arbitrary code via a crafted executable.

CWE(s)
CWE-94

Related Threats

MITRE ATT&CK Enterprise Techniques

T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
attack.mitre.org →
T1559.003 XPC Services Execution
Adversaries can provide malicious content to an XPC service daemon for local code execution.
attack.mitre.org →
T1584.008 Network Devices Resource Development
Adversaries may compromise third-party network devices that can be used during targeting.
attack.mitre.org →
T1677 Poisoned Pipeline Execution Execution
Adversaries may manipulate continuous integration / continuous development (CI/CD) processes by injecting malicious code into the build process.
attack.mitre.org →
T1059.001 PowerShell Execution
Adversaries may abuse PowerShell commands and scripts for execution.
attack.mitre.org →
T1059.003 Windows Command Shell Execution
Adversaries may abuse the Windows command shell for execution.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2024-24780Shared CWE-94
CVE-2025-31722Shared CWE-94
CVE-2024-3734Shared CWE-94
CVE-2024-11613Shared CWE-94
CVE-2025-53547Shared CWE-94
CVE-2024-21689Shared CWE-94
CVE-2025-42922Shared CWE-94
CVE-2024-43388Shared CWE-94
CVE-2023-23551Shared CWE-94
CVE-2023-0048Shared CWE-94

Affected Assets

Mapserver
—
inferred from references and description; NVD did not file a CPE for this CVE

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V1.3.1

Mitigating Controls (NIST 800-53 r5) AI

SA-11 Developer Testing and Evaluation good match

Developer testing and evaluation finds code paths that accept and execute externally influenced strings.

SI-10 Information Input Validation good match

Input validation directly stops untrusted data from being used to construct executable code without neutralization.

AC-6 Least Privilege partial match

Least privilege limits the damage an injected code fragment can perform once executed.

SA-15 Development Process, Standards, and Tools partial match

Requiring documented secure development standards and tools enforces use of safe code-generation APIs and escaping.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
blocks

PR.PS-06's SDLC practices directly target injection flaws via secure coding and testing (mostly), yet as a single broad outcome it leaves many code-generation specifics unaddressed (partial).

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.28 Secure coding partial match
prevents

Banning unapproved code samples and unauthenticated web services, combined with secure-coding standards and SAST, prevents the dynamic generation or inclusion of attacker-supplied code.

References