Is CVE-2026-6536 in the CISA KEV catalog?

No. CVE-2026-6536 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-6536?

CVE-2026-6536 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2026-6536?

CVE-2026-6536 has an EPSS score of 0.18% (8th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-6536?

Upgrade wireshark on debian unstable to 4.6.5-1 or later.

CVE & CISA-KEV Catalog

CVE-2026-6536

MEDIUM

5.5

CVSS v3

NVD

Description

DLMS/COSEM protocol dissector infinite loop in Wireshark 4.6.0 to 4.6.4

CWE-835

How to fix

Remediation Available

wiresharkDebian

Fixed in:4.6.5-1CVE-2026-6536

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Exploit Intelligence

0.18%probability of exploitation in 30 days

8thpercentile

Low risk: more likely to be exploited than 8% of all known CVEs.

References

Exploit2

Vendor Advisory1

wireshark.org

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-01.