How severe is CVE-2025-26845?

CVE-2025-26845 has a CVSS 3.x base score of 9.8, 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 high.

Is CVE-2025-26845 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-26845?

CVE-2025-26845 primarily affects Znuny. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-26845?

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-2025-26845 have an EU (EUVD) identifier?

Yes. CVE-2025-26845 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-14021.

When was CVE-2025-26845 published?

CVE-2025-26845 was published on 2025-05-08 and last updated on 2026-06-17.

CVE-2025-26845

CVE-2025-26845 is a critical-severity vulnerability in Znuny with a CVSS 3.x base score of 9.8. 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-94.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-14021
Weakness: CWE-94
Affected product: Znuny
Published: 2025-05-08
Last modified: 2026-06-17

Description

An Eval Injection issue was discovered in Znuny through 7.1.3. A user with write access to the configuration file can use this to execute a command executed by the user running the backup.pl script.

Frequently asked questions

What is CVE-2025-26845?: An Eval Injection issue was discovered in Znuny through 7.1.3. A user with write access to the configuration file can use this to execute a command executed by the user running the backup.pl script.
How severe is CVE-2025-26845?: CVE-2025-26845 has a CVSS 3.x base score of 9.8, 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 high.
Is CVE-2025-26845 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-26845?: CVE-2025-26845 primarily affects Znuny. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-26845?: 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-2025-26845 have an EU (EUVD) identifier?: Yes. CVE-2025-26845 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-14021.
When was CVE-2025-26845 published?: CVE-2025-26845 was published on 2025-05-08 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:znuny:znuny:*:*:*:*:lts:*:*:*
cpe:2.3:a:znuny:znuny:*:*:*:*:-:*:*:*

More vulnerabilities in Znuny

CVE-2025-26846 — Critical (CVSS 9.8): An issue was discovered in Znuny before 7.1.4. Permissions are not checked properly when using the Generic Interface to…
CVE-2025-26844 — Critical (CVSS 9.8): An issue was discovered in Znuny through 7.1.3. A cookie is set without the HttpOnly flag.
CVE-2024-32491 — Critical (CVSS 9.8): An issue was discovered in Znuny and Znuny LTS 6.0.31 through 6.5.7 and Znuny 7.0.1 through 7.0.16 where a logged-in…
CVE-2024-32493 — High (CVSS 8.8): An issue was discovered in Znuny LTS 6.5.1 through 6.5.7 and Znuny 7.0.1 through 7.0.16 where a logged-in agent is able…
CVE-2025-26847 — High (CVSS 7.5): An issue was discovered in Znuny before 7.1.5. When generating a support bundle, not all passwords are masked.
CVE-2025-26842 — High (CVSS 7.5): An issue was discovered in Znuny through 7.1.3. If access to a ticket is not given, the content of S/MIME encrypted…

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