# CVE-2026-76918 — Wireshark

> As of 2026-08-20, CVE-2026-76918 is a MEDIUM-severity vulnerability in Wireshark, CVSS v3.1 5.5, EPSS 0.1% (1.2th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-76918 as of 2026-08-20; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-08-20

## What is CVE-2026-76918?

SSH protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service

The record classifies CVE-2026-76918 under weakness class [CWE-122](https://intel.threadlinqs.com/cwe/CWE-122). Its CVSS v3 base vector states that the flaw requires local access to the host, needs no prior authentication, needs a user to take an action first, and has high impact on availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 47 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 5.5 — MEDIUM (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H`)
- **EPSS (FIRST):** 0.1% probability of exploitation in the next 30 days, higher than 1.2% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 2.8/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-08-19, last modified 2026-08-20

## Is CVE-2026-76918 being exploited?

It currently carries a trending score of 30 in the Threadlinqs vulnerability feed.

## Affected products and versions

- [Wireshark Foundation](https://intel.threadlinqs.com/vendors/wireshark-foundation): Wireshark

## How to fix CVE-2026-76918

No vendor patch reference has been recorded for CVE-2026-76918 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-76918

No threat campaign in the Threadlinqs corpus currently references CVE-2026-76918, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, FIRST EPSS. Last verified by Threadlinqs on 2026-08-21.

**Other references**

- [wireshark.org](https://www.wireshark.org/security/wnpa-sec-2026-85.html)
- [gitlab.com](https://gitlab.com/wireshark/wireshark/-/work_items/21465)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-76918
Full detection coverage and IOCs for threats exploiting CVE-2026-76918 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp