How severe is CVE-2025-63950?

CVE-2025-63950 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-63950 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-63950?

CVE-2025-63950 affects Tomaszdunia Twittodon. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-63950?

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-2025-63950 have an EU (EUVD) identifier?

Yes. CVE-2025-63950 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204318.

When was CVE-2025-63950 published?

CVE-2025-63950 was published on 2025-12-18 and last updated on 2026-06-17.

CVE-2025-63950

CVE-2025-63950 is a high-severity vulnerability in Tomaszdunia Twittodon with a CVSS 3.x base score of 7.5. 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-502.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (35th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-204318
Weakness: CWE-502
Affected product: Tomaszdunia Twittodon
Published: 2025-12-18
Last modified: 2026-06-17

Description

An insecure deserialization vulnerability exists in the download.php script of the to3k Twittodon application through commit b1c58a7d1dc664b38deb486ca290779621342c0b (2023-02-28). The 'obj' parameter receives base64-encoded data that is passed directly to the unserialize() function without validation. This allows a remote, unauthenticated attacker to inject arbitrary PHP objects, leading to a denial of service.

Frequently asked questions

What is CVE-2025-63950?: An insecure deserialization vulnerability exists in the download.php script of the to3k Twittodon application through commit b1c58a7d1dc664b38deb486ca290779621342c0b (2023-02-28). The 'obj' parameter receives base64-encoded data that is passed directly to the unserialize() function without validation. This allows a remote, unauthenticated attacker to inject arbitrary PHP objects, leading to a denial of service.
How severe is CVE-2025-63950?: CVE-2025-63950 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-63950 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-63950?: CVE-2025-63950 affects Tomaszdunia Twittodon. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-63950?: 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-2025-63950 have an EU (EUVD) identifier?: Yes. CVE-2025-63950 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204318.
When was CVE-2025-63950 published?: CVE-2025-63950 was published on 2025-12-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:tomaszdunia:twittodon:*:*:*:*:*:*:*:*

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