How severe is CVE-2025-13946?

CVE-2025-13946 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-13946 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-13946?

CVE-2025-13946 affects Wireshark. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-13946?

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

Does CVE-2025-13946 have an EU (EUVD) identifier?

Yes. CVE-2025-13946 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-200732.

When was CVE-2025-13946 published?

CVE-2025-13946 was published on 2025-12-03 and last updated on 2026-06-17.

CVE-2025-13946

CVE-2025-13946 is a medium-severity vulnerability in Wireshark with a CVSS 3.x base score of 5.5. 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-835.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (3rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-200732
Weakness: CWE-835
Affected product: Wireshark
Published: 2025-12-03
Last modified: 2026-06-17

Description

MEGACO dissector infinite loop in Wireshark 4.6.0 to 4.6.1 and 4.4.0 to 4.4.11 allows denial of service

Frequently asked questions

What is CVE-2025-13946?: MEGACO dissector infinite loop in Wireshark 4.6.0 to 4.6.1 and 4.4.0 to 4.4.11 allows denial of service
How severe is CVE-2025-13946?: CVE-2025-13946 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-13946 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-13946?: CVE-2025-13946 affects Wireshark. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-13946?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-13946 have an EU (EUVD) identifier?: Yes. CVE-2025-13946 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-200732.
When was CVE-2025-13946 published?: CVE-2025-13946 was published on 2025-12-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*

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