CVE-2026-77176

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 65% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: 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 Kata Containers. In configurations utilizing genpolicy for Confidential Containers guest protection, a malicious host operator can exploit insufficient validation of CreateContainer mount and storage rules. This allows them to mount arbitrary container-rootfs paths over sensitive host locations or provision arbitrary content, potentially exposing confidential information or enabling the acceptance of attacker-controlled input.

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity81% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
35%
KEV
Not listed

Published

August 20, 2026

Last Modified

September 1, 2026

Advisory Details (3)

Auto-updated Aug 20, 2026
Patch available. Sources: redhat, github.
github Patch Available

generated policy allows mounting attacker-chosen guest paths to specific locations · Advisory · kata-containers/kata-containers · GitHub

https://github.com/kata-containers/kata-containers/security/advisories/GHSA-fmg6-v47x-52wr
redhat

2517502 – (CVE-2026-77176) CVE-2026-77176 kata-containers: Insufficient validation of CreateContainer mount and storage rules in genpolicy

https://bugzilla.redhat.com/show_bug.cgi?id=2517502
redhat Patch Available

CVE-2026-77176 - 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-2026-77176

Weakness Classification(1)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 23× in last 7d / 78× 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. 2026-09-19 11:17 UTCVendor advisory
  2. 2026-09-19 00:10 UTCEG score recompute
  3. 2026-09-19 00:10 UTCVendor advisory
  4. 2026-09-18 19:28 UTCEPSS rescore
  5. 2026-09-18 13:00 UTCVendor advisory
  6. 2026-09-18 01:52 UTCEG score recompute
  7. 2026-09-18 01:52 UTCVendor advisory
  8. 2026-09-17 14:44 UTCVendor advisory
  9. 2026-09-17 03:28 UTCVendor advisory
  10. 2026-09-16 15:48 UTCEG score recompute
  11. 2026-09-16 15:48 UTCVendor advisory
  12. 2026-09-16 14:08 UTCEPSS rescore
  13. 2026-09-16 05:15 UTCEPSS rescore
  14. 2026-09-16 04:40 UTCVendor advisory
  15. 2026-09-15 17:26 UTCVendor advisory
  16. 2026-09-15 06:17 UTCEG score recompute
  17. 2026-09-15 06:17 UTCVendor advisory
  18. 2026-09-15 03:12 UTCEPSS rescore
  19. 2026-09-14 19:08 UTCVendor advisory
  20. 2026-09-14 07:11 UTCVendor advisory
  21. 2026-09-13 20:03 UTCEG score recompute
  22. 2026-09-13 20:03 UTCVendor advisory
  23. 2026-09-13 08:54 UTCVendor advisory
  24. 2026-09-12 21:46 UTCEG score recompute
  25. 2026-09-12 21:46 UTCVendor advisory
Show 56 more
  1. 2026-09-12 15:02 UTCEPSS rescore
  2. 2026-09-12 10:38 UTCVendor advisory
  3. 2026-09-11 23:29 UTCEG score recompute
  4. 2026-09-11 23:29 UTCVendor advisory
  5. 2026-09-11 14:53 UTCEPSS rescore
  6. 2026-09-11 12:12 UTCEG score recompute
  7. 2026-09-10 12:17 UTCEG score recompute
  8. 2026-09-10 09:35 UTCEPSS rescore
  9. 2026-09-09 13:07 UTCVendor advisory
  10. 2026-09-09 01:58 UTCEG score recompute
  11. 2026-09-08 22:01 UTCEPSS rescore
  12. 2026-09-08 02:41 UTCEG score recompute
  13. 2026-09-06 15:27 UTCEG score recompute
  14. 2026-09-06 13:48 UTCEPSS rescore
  15. 2026-09-05 17:10 UTCEG score recompute
  16. 2026-09-04 18:49 UTCEG score recompute
  17. 2026-09-04 07:32 UTCEG score recompute
  18. 2026-09-04 05:07 UTCEPSS rescore
  19. 2026-09-02 21:55 UTCEG score recompute
  20. 2026-09-02 14:12 UTCEPSS rescore
  21. 2026-09-01 23:35 UTCEG score recompute
  22. 2026-09-01 13:54 UTCEPSS rescore
  23. 2026-09-01 12:27 UTCEG score recompute
  24. 2026-09-01 11:50 UTCEG score recompute
  25. 2026-09-01 04:40 UTCEPSS rescore
  26. 2026-09-01 04:40 UTCEPSS rescore
  27. 2026-08-31 16:40 UTCEG score recompute
  28. 2026-08-31 16:16 UTCEG score recompute
  29. 2026-08-31 03:08 UTCEG score recompute
  30. 2026-08-30 19:18 UTCEPSS rescore
  31. 2026-08-30 19:17 UTCEPSS rescore
  32. 2026-08-30 04:52 UTCEG score recompute
  33. 2026-08-30 01:22 UTCEPSS rescore
  34. 2026-08-29 06:22 UTCEG score recompute
  35. 2026-08-28 21:42 UTCEPSS rescore
  36. 2026-08-28 01:23 UTCEG score recompute
  37. 2026-08-27 14:25 UTCEPSS rescore
  38. 2026-08-26 15:59 UTCEG score recompute
  39. 2026-08-26 14:47 UTCEPSS rescore
  40. 2026-08-26 13:43 UTCEG score recompute
  41. 2026-08-25 20:37 UTCEG score recompute
  42. 2026-08-25 13:49 UTCEPSS rescore
  43. 2026-08-24 22:18 UTCEG score recompute
  44. 2026-08-24 14:18 UTCEPSS rescore
  45. 2026-08-24 11:11 UTCEG score recompute
  46. 2026-08-23 01:46 UTCEG score recompute
  47. 2026-08-23 00:19 UTCEPSS rescore
  48. 2026-08-22 03:30 UTCEG score recompute
  49. 2026-08-21 23:49 UTCEPSS rescore
  50. 2026-08-21 16:22 UTCEG score recompute
  51. 2026-08-21 16:05 UTCEG score recompute
  52. 2026-08-21 10:25 UTCEG score recompute
  53. 2026-08-20 23:16 UTCEG score recompute
  54. 2026-08-20 17:34 UTCEG score recompute
  55. 2026-08-20 16:33 UTCEG score recompute
  56. 2026-08-20 16:32 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-77176?
CVE-2026-77176 is a high vulnerability published on August 20, 2026. A flaw was found in Kata Containers. In configurations utilizing genpolicy for Confidential Containers guest protection, a malicious host operator can exploit insufficient validation of CreateContainer mount and storage rules. This allows them to mount arbitrary container-rootfs paths over…
When was CVE-2026-77176 disclosed?
CVE-2026-77176 was first published in the National Vulnerability Database on August 20, 2026, with the most recent update on September 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-77176 actively exploited?
CVE-2026-77176 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 64.9% of all scored CVEs.
What is the CVSS score of CVE-2026-77176?
CVE-2026-77176 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-77176?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-77176, 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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