How severe is CVE-2025-6216?

CVE-2025-6216 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-2025-6216 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 29% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-6216?

CVE-2025-6216 affects Alltena Allegra. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-6216?

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-2025-6216 have an EU (EUVD) identifier?

Yes. CVE-2025-6216 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-28704.

When was CVE-2025-6216 published?

CVE-2025-6216 was published on 2025-06-21 and last updated on 2026-06-17.

CVE-2025-6216

CVE-2025-6216 is a critical-severity vulnerability in Alltena Allegra with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 29% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-640.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 29% (98th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-28704
Weakness: CWE-640
Affected product: Alltena Allegra
Published: 2025-06-21
Last modified: 2026-06-17

Description

Allegra calculateTokenExpDate Password Recovery Authentication Bypass Vulnerability. This vulnerability allows remote attackers to bypass authentication on affected installations of Allegra. Authentication is not required to exploit this vulnerability. The specific flaw exists within the password recovery mechanism. The issue results from reliance upon a predictable value when generating a password reset token. An attacker can leverage this vulnerability to bypass authentication on the application. Was ZDI-CAN-27104.

Frequently asked questions

What is CVE-2025-6216?: Allegra calculateTokenExpDate Password Recovery Authentication Bypass Vulnerability. This vulnerability allows remote attackers to bypass authentication on affected installations of Allegra. Authentication is not required to exploit this vulnerability. The specific flaw exists within the password recovery mechanism. The issue results from reliance upon a predictable value when generating a password reset token. An attacker can leverage this vulnerability to bypass authentication on the application. Was ZDI-CAN-27104.
How severe is CVE-2025-6216?: CVE-2025-6216 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-2025-6216 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 29% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-6216?: CVE-2025-6216 affects Alltena Allegra. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-6216?: 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-2025-6216 have an EU (EUVD) identifier?: Yes. CVE-2025-6216 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-28704.
When was CVE-2025-6216 published?: CVE-2025-6216 was published on 2025-06-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:alltena:allegra:*:*:*:*:*:*:*:*

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