5.6

CVE-2026-88264: containers crun Link Following

CVSS: 5.6v3.1MediumAwaiting analysis
AliasesUBUNTU-CVE-2026-88264DEBIAN-CVE-2026-88264
Published 10-09-2026Last modified 25-09-2026
Open JSON

Vulnerability summary

CVE-2026-88264 is a medium (CVSS 5.6) Link Following vulnerability in containers crun. EPSS estimates a 0.12% chance of exploitation in the next 30 days, higher than 1.7% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.6/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.12%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 1
OPENSUSE-SU-2026:12162-1RHSA-2026:71668

Timeline

  1. 10-09-2026
    PublishedVulnerability first disclosed.
  2. 25-09-2026
    Last modifiedVulnerability information updated.

Description

A flaw was found in crun. When the container configuration does not give /dev a dedicated mount, terminal setup can redirect /dev/console onto an attacker-controlled path, including via the read-only-rootfs bind-mount fallback. Affected versions are crun 1.29.1 and earlier. Default configurations that mount a fresh /dev are not exposed. No fixed release is available yet.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.12%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

0.00 pp

From 0.12% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.12%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Containers1 product
Debian1 product
  • crunAll versions (No fix recorded)
Ubuntu1 product
  • crunAll versions (No fix recorded)

3 vendors · 3 products

References

7 links