# CVE-2026-77113 — Canonical Apport

> As of 2026-08-21, CVE-2026-77113 is a Medium-severity (band derived from the CVSS v4.0 score, not stated by the CNA) vulnerability in Canonical Apport, CVSS v4.0 6.7, EPSS 0.1% (5.8th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-77113 as of 2026-08-21; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-08-21

## What is CVE-2026-77113?

Path traversal in apport-unpack in Canonical Apport before 2.36.0, 2.34.2, and 2.28.4 on Linux allows an attacker to create or overwrite arbitrary files with the privileges of the executing user via an attacker controlled key names in crash report files.

The record classifies CVE-2026-77113 under weakness class [CWE-23](https://intel.threadlinqs.com/cwe/CWE-23). 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 46 days ago.

## Severity and exploitation probability

- **CVSS v4.0 base score:** 6.7 — Medium (derived from score) (`CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N`)
- **EPSS (FIRST):** 0.1% probability of exploitation in the next 30 days, higher than 5.8% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 3.6/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-08-20, last modified 2026-08-21

## Is CVE-2026-77113 being exploited?

It currently carries a trending score of 31 in the Threadlinqs vulnerability feed.

## Affected products and versions

- [Canonical](https://intel.threadlinqs.com/vendors/canonical): Apport

## How to fix CVE-2026-77113

No vendor patch reference has been recorded for CVE-2026-77113 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-2026-77113

No threat campaign in the Threadlinqs corpus currently references CVE-2026-77113, 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, NVD, FIRST EPSS. Last verified by Threadlinqs on 2026-08-22. This product uses the NVD API but is not endorsed or certified by the NVD.

**Vendor advisory and patch**

- [launchpad.net — issue tracking](https://launchpad.net/bugs/2161697)
- [github.com — patch](https://github.com/canonical/apport/pull/646)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-77113
Full detection coverage and IOCs for threats exploiting CVE-2026-77113 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp