How severe is CVE-2026-30479?

CVE-2026-30479 has a CVSS 3.x base score of 9.1, 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 none.

Is CVE-2026-30479 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-30479?

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.

Does CVE-2026-30479 have an EU (EUVD) identifier?

Yes. CVE-2026-30479 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-20932.

When was CVE-2026-30479 published?

CVE-2026-30479 was published on 2026-04-09 and last updated on 2026-06-17.

CVE-2026-30479

CVE-2026-30479 is a critical-severity vulnerability with a CVSS 3.x base score of 9.1. 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-94.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-20932
Weakness: CWE-94
Published: 2026-04-09
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2026-30479?: A Dynamic-link Library Injection vulnerability in OSGeo Project MapServer before v8.0 allows attackers to execute arbitrary code via a crafted executable.
How severe is CVE-2026-30479?: CVE-2026-30479 has a CVSS 3.x base score of 9.1, 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 none.
Is CVE-2026-30479 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-30479?: 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.
Does CVE-2026-30479 have an EU (EUVD) identifier?: Yes. CVE-2026-30479 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-20932.
When was CVE-2026-30479 published?: CVE-2026-30479 was published on 2026-04-09 and last updated on 2026-06-17.

References

Other CWE-94 (Code Injection) vulnerabilities

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CVE-2026-48836 — Critical (CVSS 10.0): Unauthenticated Remote Code Execution (RCE) in Easy Invoice <= 2.1.19 versions.

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