How severe is CVE-2026-6519?

CVE-2026-6519 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-2026-6519 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-6519?

CVE-2026-6519 affects Wireshark. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-6519?

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

Does CVE-2026-6519 have an EU (EUVD) identifier?

Yes. CVE-2026-6519 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26327.

When was CVE-2026-6519 published?

CVE-2026-6519 was published on 2026-04-30 and last updated on 2026-06-17.

CVE-2026-6519

CVE-2026-6519 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% (7th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-26327
Weakness: CWE-835
Affected product: Wireshark
Published: 2026-04-30
Last modified: 2026-06-17

Description

MBIM protocol dissector infinite loop in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service

Frequently asked questions

What is CVE-2026-6519?: MBIM protocol dissector infinite loop in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service
How severe is CVE-2026-6519?: CVE-2026-6519 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-2026-6519 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-6519?: CVE-2026-6519 affects Wireshark. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-6519?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-6519 have an EU (EUVD) identifier?: Yes. CVE-2026-6519 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26327.
When was CVE-2026-6519 published?: CVE-2026-6519 was published on 2026-04-30 and last updated on 2026-06-17.

References

Affected products (1)

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

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