How severe is CVE-2026-5789?

CVE-2026-5789 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-5789 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-5789?

CVE-2026-5789 affects Civetweb Project Civetweb. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-5789?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-5789 have an EU (EUVD) identifier?

Yes. CVE-2026-5789 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-24138.

When was CVE-2026-5789 published?

CVE-2026-5789 was published on 2026-04-21 and last updated on 2026-06-17.

CVE-2026-5789

CVE-2026-5789 is a high-severity vulnerability in Civetweb Project Civetweb with a CVSS 3.x base score of 7.8. 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-428.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v4: 8.5
EPSS exploit prediction: 0% (4th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-24138
Weakness: CWE-428
Affected product: Civetweb Project Civetweb
Published: 2026-04-21
Last modified: 2026-06-17

Description

Vulnerability related to an unquoted search path in CivetWeb v1.16. This vulnerability allows a local attacker to execute arbitrary code with elevated privileges by placing a malicious executable in a directory that is scanned before the intended application path (C:\Program Files\CivetWeb\CivetWeb.exe --), due to the absence of quotes in the service configuration.

Frequently asked questions

What is CVE-2026-5789?: Vulnerability related to an unquoted search path in CivetWeb v1.16. This vulnerability allows a local attacker to execute arbitrary code with elevated privileges by placing a malicious executable in a directory that is scanned before the intended application path (C:\Program Files\CivetWeb\CivetWeb.exe --), due to the absence of quotes in the service configuration.
How severe is CVE-2026-5789?: CVE-2026-5789 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-5789 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-5789?: CVE-2026-5789 affects Civetweb Project Civetweb. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-5789?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-5789 have an EU (EUVD) identifier?: Yes. CVE-2026-5789 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-24138.
When was CVE-2026-5789 published?: CVE-2026-5789 was published on 2026-04-21 and last updated on 2026-06-17.

References

https://www.incibe.es/en/incibe-cert/notices/aviso/search-path-without-quotes-civetweb

Affected products (1)

cpe:2.3:a:civetweb_project:civetweb:1.16:*:*:*:*:*:*:*

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