CVE-2026-88264

MEDIUMPre-NVD 5.65.6—
EchelonGraph scoreHIGH confidence

Score 5.6 from GitHub Security Advisory published 2026-09-10. a secondary CVSS source baseline 5.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.6EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.6Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
5.6
EG Score
5.6(high)
EG Risk
25(Track)
EG Risk 25/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity56% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

September 10, 2026

Last Modified

September 15, 2026

Advisory Details (3)

Auto-updated Sep 10, 2026
Patch available. Sources: redhat.
generic

GitHub - containers/crun: A fast and lightweight fully featured OCI runtime and C library for running containers · GitHub

https://github.com/containers/crun/
redhat

2531223 – (CVE-2026-88264) CVE-2026-88264 crun: crun: /dev/console symlink follow allows root-owned file creation outside the rootfs

https://bugzilla.redhat.com/show_bug.cgi?id=2531223
redhat Patch Available

CVE-2026-88264 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-88264

Vendor Advisories for CVE-2026-88264(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 18× in last 7d / 37× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-20 00:06 UTCEG score recompute
  2. 2026-09-20 00:06 UTCGHSA enrichment
  3. 2026-09-18 22:13 UTCEG score recompute
  4. 2026-09-18 22:13 UTCGHSA enrichment
  5. 2026-09-18 19:28 UTCEPSS rescore
  6. 2026-09-17 20:21 UTCEG score recompute
  7. 2026-09-17 20:21 UTCGHSA enrichment
  8. 2026-09-17 19:32 UTCEPSS rescore
  9. 2026-09-16 18:28 UTCEG score recompute
  10. 2026-09-16 18:28 UTCGHSA enrichment
  11. 2026-09-16 14:09 UTCEPSS rescore
  12. 2026-09-16 05:15 UTCEPSS rescore
  13. 2026-09-15 16:35 UTCEG score recompute
  14. 2026-09-15 16:35 UTCGHSA enrichment
  15. 2026-09-15 15:25 UTCEG score recompute
  16. 2026-09-15 15:25 UTCGHSA enrichment
  17. 2026-09-15 03:12 UTCEPSS rescore
  18. 2026-09-14 23:29 UTCGHSA enrichment
  19. 2026-09-13 21:08 UTCEG score recompute
  20. 2026-09-13 21:08 UTCGHSA enrichment
  21. 2026-09-13 16:48 UTCEPSS rescore
  22. 2026-09-12 19:15 UTCEG score recompute
  23. 2026-09-12 19:15 UTCGHSA enrichment
  24. 2026-09-12 15:02 UTCEPSS rescore
  25. 2026-09-11 17:22 UTCEG score recompute
Show 12 more
  1. 2026-09-11 17:22 UTCGHSA enrichment
  2. 2026-09-11 14:53 UTCEPSS rescore
  3. 2026-09-11 14:53 UTCEPSS rescore
  4. 2026-09-10 14:57 UTCGHSA enrichment
  5. 2026-09-10 13:37 UTCEG score recompute
  6. 2026-09-10 13:37 UTCGHSA enrichment
  7. 2026-09-10 13:05 UTCEG score recompute
  8. 2026-09-10 13:05 UTCGHSA enrichment
  9. 2026-09-10 09:36 UTCEG score recompute
  10. 2026-09-10 09:36 UTCGHSA enrichment
  11. 2026-09-10 08:45 UTCEG score recompute
  12. 2026-09-10 08:44 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-88264?
CVE-2026-88264 is a medium vulnerability published on September 10, 2026. 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…
When was CVE-2026-88264 disclosed?
CVE-2026-88264 was first published in the National Vulnerability Database on September 10, 2026, with the most recent update on September 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-88264 actively exploited?
CVE-2026-88264 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 98.1% of all scored CVEs.
What is the CVSS score of CVE-2026-88264?
CVE-2026-88264 has a CVSS v3 base score of 5.6 (NVD).
How do I remediate CVE-2026-88264?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-88264, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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