How severe is CVE-2026-40941?

CVE-2026-40941 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2026-40941 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-40941?

CVE-2026-40941 affects Cacti. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-40941?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-40941 have an EU (EUVD) identifier?

Yes. CVE-2026-40941 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39589.

When was CVE-2026-40941 published?

CVE-2026-40941 was published on 2026-06-25 and last updated on 2026-06-29.

CVE-2026-40941

CVE-2026-40941 is a medium-severity vulnerability in Cacti with a CVSS 3.x base score of 6.5. 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-347.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v4: 7.1
EPSS exploit prediction: 0% (5th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-39589
Weakness: CWE-347
Affected product: Cacti
Published: 2026-06-25
Last modified: 2026-06-29

Description

Cacti is an open source performance and fault management framework. Versions 1.2.30 and prior have a package import signature validation bypass allows which allows self-signed packages. This issue has been fixed in version 1.2.31.

Frequently asked questions

What is CVE-2026-40941?: Cacti is an open source performance and fault management framework. Versions 1.2.30 and prior have a package import signature validation bypass allows which allows self-signed packages. This issue has been fixed in version 1.2.31.
How severe is CVE-2026-40941?: CVE-2026-40941 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2026-40941 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-40941?: CVE-2026-40941 affects Cacti. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-40941?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-40941 have an EU (EUVD) identifier?: Yes. CVE-2026-40941 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39589.
When was CVE-2026-40941 published?: CVE-2026-40941 was published on 2026-06-25 and last updated on 2026-06-29.

References

Affected products (1)

cpe:2.3:a:cacti:cacti:*:*:*:*:*:*:*:*

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